WO2015192963A1 - Magnetic blade sharpener - Google Patents

Abstract

The invention relates to a magnetic blade sharpener, in particular a magnetic razor blade sharpener, preferably for wet razors, said magnetic blade sharpener having an optimized magnetic circuit. The aim of the invention is to design a magnetic blade sharpener, in particular a magnetic razor blade sharpener, preferably for wet razors, said magnetic blade sharpener having an optimized magnetic circuit after the application of a force (1), the forces acting on interfaces of materials with different permeability values μ that are subject to the magnetic flux, in particular forces at the interfaces of iron-air transitions. The particularly advantageous property of the device according to the invention is that hair-cutting devices, in particular razors, which have handles, head pieces and blade systems of different types, can be resharpened quickly, effectively and without impairment by way of the magnetic method according to the invention. The embodiment of the sharpening magnet incorporated into the storage and resharpening device does not require the user to have any knowledge of mathematics or physics so that particularly independently of the pitch angle of the blades of a razor required by the manufacturer the magnet surface of the sharpener is optimally spaced apart from the blade plane in a substantially perpendicular manner. The magnetic attraction forces between the resharpening magnet and the razor also help to ensure the correct parallel position of the blade cutting edges to the longitudinal extension of the sharpening magnet during sharpening. The storage and resharpening device according to the invention is advantageously designed as a free-standing device in which the hair cutting device is stored in a substantially perpendicular position, rotated by approximately 180° relative to the position of use.

Description

 International patent application

Magnetic blade sharpener

description

The invention relates to a magnetic blade sharpener - in particular a magnetic razor blade sharpener for preferably wet razor with optimized magnetic circuit.

The invention of the razor blade and planer by King Camp Gillette displaced the classic, mostly foldable razor - often with interchangeable blades, also called shavets - in favor of so-called safety razors with interchangeable blades, whose handling in use and maintenance was easier. The traditional wet shaving with razor stand against the dry or wet shave with disposable devices and the dry shave with electric razors. After use, not always made of stainless steel blade needs care.

With a leather - or Streichriemen called - formed after shaving fine ridge of the blade cutting in the form of bumps by flat or slightly hired stripping withdrawal with little pressure in the direction of the back of the blade straightened again, fine cracks smoothed and with coating of the belt with a polishing agent polished the cutting area. When using a hanging strap, the complicated geometry of the blade can become undesirable rounding or crowning; When removing leather or leather damage to the belt and blade should be avoided. If the sharpness of the blade is no longer sufficient for a shave after being scuffed, the blade is sharpened with the help of a whetstone - like the Belgian chunk or the novaculite stone. While peeling off the leather straps, the burr deformed during the shaving process is straightened, so blade material is removed when pulled off the stone.

Blades and, in particular, razor blades are milled from martensitic and precipitation-hardening corrosion-resistant steels to thicknesses between 0.075 mm... 1 mm and widths of 5 mm to 350 mm, first warm and then cold-rolled, and in rings of 500 mm. 1,000 mm outer diameter wound up for further processing. The steels belong to the group of carbon Martensite and contain in addition to the main alloying elements iron and chromium portions of the manufacturing process derived by-elements carbon, silicon and manganese; In addition, they may include molybdenum, which increases corrosion resistance, and sulfur to improve machinability. An increase in carbon causes the material to change from being tough to hard; Chromium and possibly molybdenum components increase the corrosion resistance. A very good corrosion resistance can not be achieved with the desired high hardness or very good corrosion resistance. combine resistance to wear; in the first case, the carbon content should be lowered and in the other case it should be increased. An exemplary chemical composition for a carbon martensite of EN material no. 1.4034 or the EN short name X46Cr13 is in mass%

- Carbon content C: 0.43 - 0.50

 - maximum silicon content Si: 1.0

 - maximum manganese content Mn: 1.0

 - Sulfur content S: <0.015

Chromium content Cr: 12.5 ... 14.5 and for a traded material the proportions are C: 0.68, Si: 0.40, Mn: 0.60, Pmax: 0.025 (phosphorus), Sma _X : 0.010 and Cr: 12.9. The material is characterized by high strength, good corrosion resistance and very good wear resistance and is particularly suitable as a blade material of medical and industrial cutting tools and razor blades.

The martensitic corrosion-resistant steels are very similar in their magnetic properties to the ferritic corrosion-resistant steels. The martensitic structure of these materials hampers both magnetization and demagnetization; Depending on the heat treatment state, the martensitic corrosion-resistant steels can therefore fall into the category of hard magnetic materials, which by definition are defined by a coercive force H _c > 1000 A / m, in the range 750 A / m <H _c <2,750 A / m ( For comparison, distinguish ferritic corrosion-resistant materials in the range 250 A / m <H _c <750 A / m.

Ferromagnetic ferritic and martensitic corrosion-resistant steels have relative permeabilities μ »1, martensitic corrosion-resistant materials in the range 200 <u <500 (for comparison, ferritic corrosion-resistant materials in the range 500 <μ <3,000). The magnetization behavior of ferromagnetic corrosion-resistant materials can be described by the magnetization curve of the material.

Another electrically interesting material parameter is the electrical conductivity in S / m = 1 / (Ω · m) or their reciprocal, the resistivity p in Ω · mm ² / m. The electrical conductivity κ and the resistivity p of some known materials are

 K P

- Copper Cu 56 · 10 ⁶ 1, 78 · 10- ²

- Aluminum AI 37 x 10 ⁶ 2.70 · 10- ²

- Nickel Ni 14.4 x 10 ⁶ 6.94 · 10- ²

Iron Fe 10 · 10 ⁶ 1 · 10- ¹

Chromium Cr 8,33 · 10 ⁶ 1, 2 · io- ¹

- Stainless steel V2A, EN-Wst.-Nr. 1.4301, 1, 4 · 10 ⁶ 7.1 · 10- ¹

EN-Kn. X5CrNi18-10 V2A stainless steel, No. 1.4301, with a chemical composition in mass%

- maximum carbon content C: 0.07

 - Chrome content Cr: 17,5 ... 19,5

 - Nickel content Ni: 8.0 ... 10.5 is not a good electrical conductor, but also no electrical dielectric or insulator; its electrical conductivity κ (or its resistivity p) is 40 times worse (larger) than copper (s) or 26 times worse (larger) than aluminum (s) or 7 times worse (larger) than ( the) of iron.

In summary, it can be stated that the material for razor blade manufacturing

- is a carbon martensite stainless steel,

 - whose magnetic behavior can be represented by means of the hysteresis curve of a ferromagnetic material,

 - due to its high coercive field strength belongs to the hard magnetic materials,

 - is a good magnetic conductor due to its permeability number and

 - also an electrical conductor - albeit no good - depicts.

From the electromagnetic phenomena, three different types of force effects 1... 3 are known from arrangements with magnetic fields

1. forces acting on interfaces of interspersed by magnetic flux substances with different permeability μ, in particular forces at interfaces of iron / air transitions

 A piece of soft iron is attracted to the air space by a permanent magnet, the magnetic field lines try to shorten. This shortening (and broadening) approach is a property common to all field line types, which determines the field line course in the conductor - as in the nonconductor - as in the magnetic field. Because of the striving of the magnetic field lines to shorten or broaden, arises at the interface of two media with different permeability μ a force that always acts perpendicular to the separation surface and the medium with the smaller permeability μ acts.

The force F with which a ferromagnetic surface A is drawn in the magnetic field B to the non-ferromagnetic μ = μο, B value of the non-ferromagnetic space

- Ρ = Β ^2/2 μο · Α.

2. forces on electrical currents in the magnetic field A current I of strength I is in a homogeneous linear magnetic field of flux density B, wherein the current I is perpendicular to the flow B. The two existing single magnetic fields, the homogeneous field and the vortex field of the current are superimposed after vector addition to a common field, this direction dependent above the current stronger than the homogeneous - because both fields have the same direction there - and below the current - because the opposite field direction - is weaker. An electrodynamic force F is formed which, according to the magnetic field distribution, points from the field of higher density to the field of weaker density. The corresponding field equation is

- F = I (€ x B); F, €, B = vector with magnitude and direction where € equals the length of the conductor in the homogeneous field B. If I, B are perpendicular to each other, the force is greatest; Help: right-hand rule, thumb pointing in direction of current I, index finger pointing in direction of magnetic field B, middle finger showing direction of force F. If the product I · € is defined as charge carrier Q moving in the conductor at velocity v, the field equation is

- F = Q (v x B); F, v, B = vectors with magnitude and direction and stands for the electrodynamic force equation of a moving electrical conductor in the homogeneous magnetic field; Again, the right-hand rule applies as above.

3. Force effects of two current-carrying conductors and their magnetic fields According to the arrangement of two parallel current filaments, which are in opposite directions and in the same direction flows through the current +/- 1, applies to the resulting magnetic field

- According to the broadening tendency of the field lines, two oppositely flowing currents repel each other; according to the shortening tendency of the field lines, two streams flowing in the same direction draw each other ah.

One current I2 is considered to be located in the magnetic field B1 of the other current Ii and the electrodynamic law of force is applied, B1 being the magnetic flux density at the location of the current I2 without its own field, resulting in the force action of two parallel currents at a distance r for the Length l in the medium calculates with μ

- F = μ · Ii · l ₂ Ί / (2 · ττ · r)

The resulting forces are very small; they only become very large streams

- such as. at an I = 10 kA short-circuit current - significant, which can lead to the destruction of the windings of electric machines.

These considerations help to analyze and appreciate the state of the art as well as finding and defining something new. In the following the state of the art of magnetic blade sharpeners is appreciated - in particular of magnetic razor blade sharpeners for preferably wet shavers with optimized magnetic circuit; According to the prior art, depending on the application, a variety of types of magnetic blade sharpeners - in particular of magnetic razor blade sharpeners for preferably wet shaver with optimized magnetic circuit in use.

According to the US patent application US 1 330 297 a transport container for razor blades of a wet safety razor is presented. Safety razors are mostly used by soldiers, campers, travelers and those who have limited luggage volume and who have difficulty packaging and transporting sharp-edged travel items. Disclosed is a flat, in plan view / cross-section oval, in the side view U-shaped paramagnetically behaving, open at the U-shaped leg ends tin container with a likewise paramagnetically behaving, removable lid. The likewise U-shaped can inner contour is flush with a cross-section round horseshoe magnet and the remaining space takes a guide and also a paramagnetic, a blade package carrying blade holder with a cover.

Paramagnets - without magnetic order - are only magnetic as long as they are in the field of a magnet; paramagnetic materials have the property of being drawn into a magnetic field, the relative permeability is μ> 1. The horseshoe magnet ^' only ^{' has} the task of transport protection for the slip-movable parts within the container; the pole shoes of the U-shaped magnet point to the can lid surface; the magnetic circuit closes over the paramagnetic cover. The blade holder with the razor blade package is located in the very weak magnetic stray field (so-called stray flux) of the volume defined by the horseshoe magnet within the magnetic circuit (so-called useful flow) and has only a slight effect on the blades and the blade holder - resting state after force action 1.

 The blade holder with the blade package is guided between the poles of the U-shaped magnet for storage in the open, lidless container or taken over this way the lidless container. In the capless state, the magnetic flux density B of the useful flux has the direction from the north pole to the south pole of the magnet. The direction of movement v of the blade holder better of the blade package - the cutting edges of the blades come to lie parallel to the legs of the magnet in the stray field - is parallel to the magnet legs. After force 2, the force on the cutting edges of the blades F = Q (vx B) during the storage and removal movement according to the right-hand rule perpendicular to the blade surface - depending on the movement up or down - directed, causing an erection of the blade tips into the blade level is not conducive.

The American applications US 1 299 095, US 1 299 096 and US 1 299 097 show related developments in the magnetization of a razor blade by a permanent horseshoe round magnet, wherein the two poles of the magnet are arranged symmetrically in the direction of the surface normal of the blade and always below the blade end up; in the first case, the blade by a holder using a pin positioned; in the second case, the holder with pin is formed by an adapter, which is placed over the magnetic poles and the third development shows beveled pole pieces, so that holder and blade are in a horizontal tilt relative to the axial axis of the poles.

In all cases, formed in the blade plane by the magnetically conductive blade, a field distribution between two magnetic poles, which can be represented essentially by concentric circles and at the blade edges substantially perpendicular to them - force effect 1 - which is not affected by the Slant of the blade is affected.

 During the storage / assembly of the blade in the magnetic arrangement occur in all cases temporarily forces for force 2, which lie in the blade plane and are directed parallel to the blade tip.

The American application US 1 529 316 / Canadian application CA 249 994 discloses a magnetic sharpener for razor and other blades, the sharpener comprising a parallelepiped housing with a hinged lid from the base of which project two locating pins for positioning and stacking blades, and on both sides of the blade tips parallel to these a) two permeable flat magnets or b) the legs of a U-magnet are arranged.

 The blade package is always in the stray field of the magnets under a) depending on the poles on the narrow sides either in the field line along the blades or perpendicular thereto (but not transverse to the longitudinal blade extension) and b) in the shadow of the field line over the poles of the magnet - force 1 ,

During the stacking of the blades under the arrangement a) and a field line along the blades, a force effect 2 occurs at short notice, which aligns the blade tips as desired.

The claim of the US application US 1 495 921 is directed to the screwless blade holder for safety razors. From the handle of the razor on both sides lead two ψ-shaped magnetized strap to the blade head and magnetize a blade support as a carrier of a blade, which then finally concludes with a cover.

 Several arrangements are designed, magnetic poles and field lines are not visible. Positive life-promoting force effects on the blade tips can not be reconstructed in this way.

According to the US patent application US 1 683 981 - as well as in the American application US 1 710 760 / UK patent application GB 284 274 and GB 310 246 / Canadian application CA 274 232 - is a horseshoe magnet in a pocket adapted to this with a hinged lid or in a covered housing. The horseshoe magnet legs are spaced from each other to accommodate a safety razor blade. To support and position the blade, a support is provided below the blade with knurled pins between which the blade is positioned. Another holder ensures the fair immovable position of the blade, fitted in thighs, support, pins and holders. The blade tips point in the direction of the thigh insides; the blades are mainly in the flux flux of the magnet. Only the blade areas near the pole are influenced more intensely by the magnetic field, a movement does not take place - resting state after force effect 1.

When inserting the blade in the horseshoe magnet, a force action 2 takes place, but the components are perpendicular to the blade tips.

In the latter publication it is also proposed to replace the permanent magnet horseshoe magnet with a coil-wound DC electromagnet of similar size; the supply takes place in this case via electrical contacts outside the housing.

The American patent application US 1 775 518 discloses a magnetizing conditioner for wet razors and a device according to this method. A cuboid box with an open at one of the two smallest sides end is located on the two largest sides fitting a horseshoe-shaped flat magnet having a pole piece on an outer groove and the other pole piece has a flattened end, said groove and end protrude from the capless box. The open box side is completed by a likewise cuboid lid open on one side, which slipped over the pole shoes, in its interior also has a magnetically conductive U-shaped strike plate, which is offset from the horseshoe magnet offset by 90 °, so that only the wall thicknesses of Horseshoe magnet and strike plate touch with the lid closed and form a magnetic conductor. The wet shaver lies inside the horseshoe magnet with its grip end in a bore of the magnet and with its blade air gap flush with the pole shoes.

The main magnetic flux concentrates at the lateral ends of the pole pieces and substantially closes over the side surfaces of the strike plate; in this state, the blade of the razor is only in the stray field of the horseshoe magnet - resting state after force 1. It is also provided with opened box to use each groove and end of the pole pieces as a storage of the razor on the blade. In these cases, the useful magnetic flux passes over the pole shoes and the wide open air gap, which is not reduced but on the overlying blade.

 Force 2 only comes into play for the brief moment when the razor is placed in the opened box; then the razor blade is in the magnetic flux for this short period of time until the box is closed with the lid as a magnetic shunt.

With the patent application US 1 782 033 another parallelepiped box is presented with one of the two largest sides as an opening and an open side opposite, bottom-adhering magnet, the lid has a riveted strike plate with 90 ° angled on the narrow sides of the pole pieces at closed lid magnetically flush resting on the magnet and form the useful flow with him.

Against the lateral ends of the flat magnet has each extending transversely to the longitudinal direction Sägezahnnuten that serve the blade holder of the razor, wherein the blade is in the magnetic stray field - resting state after force 1. Another, based on the magnetic force force 2, 3 does not occur; not even when filing or removing the razor.

The American application US 1 783 012 provides for the manual application of vibrations to the horseshoe magnet-containing housing to be covered, wherein a carrier with locating pins places the safety razor blade between the poles of the magnet, guided by recesses of the housing deck, causing the blade is magnetized transversely to its longitudinal extent. Due to the mechanical vibration of the horseshoe magnet, the force components acting on the blade tips should also act on the deformed tip elements and move them to align with or break from the blade tip. The manually applied vibration is generated by differently pronounced crank-operated ratchets and acts always on the housing indirectly on the magnet.

Since the blade is releasably fixedly connected to a carrier and the carrier is detachably fixedly connected to the horseshoe magnet, the vibration-dependent vibrations of the magnet and blade will be similar and the effects of the force components will be low - force effect 1 -.

 Also, the formation of the force 2 remains small, since the movement of the blade and the magnetic field are in harmony.

The American application US 1 795 717 describes a magnetic razor blade conditioner consisting of a high cuboid housing, in which four vertically arranged, spaced apart bar magnets are arranged so that an inserted into the housing through a prepared slot blade carrier with razor blade holders and Razor blade comes to rest between the outer bar magnet and two vertical bar magnets spaced from the blade are perpendicular to the surface. There are no references to the magnetic field characteristics or pole arrangements; movement of the blade or carrier - except for the case filling - is not intended.

It is assumed that the magnetic field closes outside the outer bar magnets and is influenced between them by the further vertically arranged bar magnets, which means a field penetration parallel to the blade surface - force effect 1.

 Upon insertion and removal of the blade, it is guided parallel to the magnetic expansion, whereby a force component develops vertically perpendicular to the blade tip - force effect 2.

The English patent application GB 044 129 / American application US 2 094 722 discloses a receptacle for razor blades in the form of a flat box in which the razor blades are stacked and manually separated by means of an axially slidable means of a bar with a handle.

In order to stabilize the blade during removal, the rod is magnetized or additionally has a permenant magnet. About the formation of the magnetic field or the expression of the magnet or the force effects of the magnetic field no further comments are given. The English patent application GB 375 965 / US application US 2 321 570 describes a package in the form of a box for flat stacked safety razor blades with a removal device by means of hinged lid such that in the housing below the blade stack parallel to the blade tips and close to both sides Round rod magnets are arranged, the magnetic field characteristic has a positive effect on the alignment of the blade tips after and before the next use such that the blade tips are maintained clean and bright for a long time and the blade consumption slows down.

About the Polgestaltung the bar magnets are no information, not even on the magnetic field expression or the force effect. Bar magnets each have at their ends a north (N) and a south pole (S); the flux is guided axially in the magnet, the field lines close over the poles and the air. Irrespective of whether the bar magnets face N- / N- and S- / S-pole or N- / S- and S- / N-P0I, the blade tips are in the stray field of the magnet - the force effect 1 is low ,

 When blade tray or -Dnähme from the housing no further force effects 2, 3 are expected.

The American application US 2 532 372 presents a manual razor with safety blade consisting of handle and blade holder, wherein on both sides below the razor blade tips and parallel to each of these a cylindrical bar magnet is arranged as a magnetic guide. No details are given on the characteristics of the magnetic field; This concerns in particular the polarity of the bar magnet. Alongside the bar magnet, there is only one stray magnetic field; the rod magnet ends have poles whose shape is field-defining. If poles of the same name face each other at the ends, they repel each other and the field lines close alongside and parallel to the longitudinal extent of the blade tips - the blade tips are in the stray field; If unlike poles face each other at the ends, the edges of the blades are tied together with an intense edge stray field. Both Polausprägungen do not lead to the desired blade tip treatment after force 1.

Force effect 2 does not develop any effect, since the safety razor blade and the holder always move uniformly with the bar magnets.

US Pat. No. 2,792,108 discloses a magnetic razor blade reconditioner comprising a parallelepiped housing with a narrow-side opening for flat reception of the head of the safety razor and a slotted cover for receiving the razor handle, both of which are laterally inserted of the razor in the housing allows. The razor head is then enclosed on three sides by a magnetic expansion part which consists of a vertically arranged sheet-metal strip and is flush with the inner sides of the legs of a horseshoe magnet at the side opposite the narrow-side housing opening and should absorb the magnetic flux.

The goal of bringing the razor tips near to as homogeneous a magnetic field as possible in order to align them is not achieved because the field distribution in the razor blade space is inhomogeneous and the magnetic flux around the poles the magnet travels the shortest path and has the highest density - the blades inserted into the housing are only in the stray field of the magnet expansion part - the force effect 1 is small.

 In blade storage or Entnähme out of the housing stray field force effects 2, 3 are expected, but their directions are aligned at the tip of the blade perpendicular to the housing surface.

German Utility Model DE 75 14 892 describes a magnetically-based razor blade sharpener such that a rectangular disk carries three spaced, centrally-arranged, upwardly tapering small cones or truncated cones which receive and position a razor blade spaced from the ground can that the blade tips are separated by an air gap a longitudinal side of each square bar magnet at medium height.

 The expression of the magnetic arrangement remains unclear; With bar magnets, poles are usually located on the top surfaces, leaving the question of a uni- or antipolar arrangement of the bar magnets. The course of the field concentrates essentially

 - In the unipolar arrangement in the longitudinal direction of the blade - ie at about 90 ° - angle to the direction of the blade tips - and

 - In the anti-polar arrangement on the two narrow sides of the blade - the blade tips are essentially in the stray field of the magnetic arrangement. With respect to force action 1, both arrangements seem less suitable for directing shaving-angled or bent tip parts of the blade with respect to blade plane.

 During the blade assembly - blade is in the stray field of the assembly - a small force 2 is formed in the blade plane.

British Patent Application GB 2 149 219 discloses a ^' safety razor blade resharpening magnetic device ^' , the device consisting of a three-dimensional, single-row, two-sided open shelf structure of non-conductive material, one side wall of which forms a permanent magnet. The blade-equipped Naßrasiererköpfe be filed for resharpening in the subjects of the shelf.

 About the arrangement of magnetic poles or the Polausprägung or the magnetic field course no information is given. From the figures, it is only apparent that, by way of example, the position of the razor blades of a razor head is arranged in a shelf perpendicular to the largest side wall inner surface of the permanent magnet.

US Pat. No. 4,615,436 discloses a razor blade conditioner comprising a flat elongate obelisk-shaped housing having a surface edge parallel, downwardly wedge-shaped surface channel for positioning and receiving a mounted razor blade of a wet shaver lying flat on the surface of the housing. If half the channel length forms the imaginary pivot point of an analog clock, then a double flat magnet is arranged vertically below the channel at a 45 ° angle or the 13:40 h pointer position approximately square individual magnets centered to the flat surface each have a bore and the flat sides are magnetically N- and S-polarized.

According to the selected magnetic pole design, the illustrated field formation - seen from above per magnet two approximately concentric flow tubes through the magnet bore - can not be reconstructed. Also their effect on the blade tip arranged at 45 ° to the magnet remains unclear, in particular if the influence of the magnetically conductive razor blade influences the field expression - force effect 1.

 When loading and unloading the razor, the force 2 also acts in the blade plane, but at an angle of 45 ° twisted on the blade tip in the stray field.

With the US patent US 5 638 042 a magnetic device is presented whose use and effect has a life-prolonging effect on the edge of cutting. By way of example, the sharpening of the teeth of a circular saw blade and of the blades of a wet razor is used as an example. The apparatus includes a unit having substantially two respective magnetic surfaces of opposite polarity of a polarized configuration which direct strong magnetic lines of force directly into the cutting edges so that the coincident lines of force are directed into the blades via the cutting edges. In the case of Naßrasierers - as well as the saw blade - a magnetization unit of juxtaposed permanent magnet alternating polarity is presented, the series is each completed by a gegenpoligen disk or cuboid permanent magnet as a magnetic connector. In both applications, the application-side surface is formed trough-shaped for receiving the blade or the blade teeth. A magnetic field leading yoke is not provided; Various shots or holders for wet shavers with floor or wall mounting complete the registration.

 The formation of the magnetic field takes place substantially directly via the adjacent opposing magnets and only secondarily via the blade or the saw blade; in the middle position of the razor blade or the saw teeth in the trough, it is located in a virtually field-free space; the force 1 is very low.

The force does not change, the blade or the saw teeth is moved in a field-free space in the direction of the tray - force 2 - or contacted for the purpose of current flow - force 3.

The German patent application DE 196 45 592 / Utility Model DE 296 21 307 in turn provides a deposit of a single-blade Naßrasierers in the top groove of a cuboid permanent magnet before - force 1 - forms a razor with a surrounding housing razor. The magnetic field lines emerge on the underside of the rod-shaped magnet in the direction of the surface normal and close - by definition - by entering the opposite rear surface. The field lines, however, will choose the longer iron path with the lower magnetic resistance that will pass over the side overhangs and not over the groove or groove center.

In the middle position of the razor blade in the groove, it is located in a virtually field-free space; the force 1 is very low. The force does not change, the blade is moved in a field-free space in the direction of the tray - force 2 - or contacted for the purpose of current flow - force 3.

In the German Utility Model DE 297 17 992 / DE-OS 198 39 140 reference is made to the previous application such that the position of the Naßrasierers in the sharpening device or the position of the blade to the permanent magnet is of great importance and can be manufacturer and product dependent. Therefore, it is proposed on the one hand to provide the shaver and the receiving sharpening device with a mechanical manufacturer and product-dependent coding. This can be done by way of example according to the ^' tongue and groove ^' principle by protruding lugs on the razor head and corresponding grooves on the device receptacle. In addition, it is proposed to arrange in the recording a permanent magnet with a pole face in a vertical position and below the blade of the stored razor whose rear, the pole face opposite Gegenpolfläche is integrally connected to a U-shaped yoke with pole piece as a magnetic conductor, wherein the yoke or the pole piece is guided above the stored razor with the aim that the magnetic circuit via magnet, yoke and blade closes.

 Since the razor manufacturer is not likely to be interested in extending the life of its products, it remains unclear whether it will provide its products on the razor head with a mechanical coding that still needs to be reconciled with competitive products.

As can be seen from the figures, results in stored in the sharpening device according to the invention razor, a large air gap between the magnet, blade and pole piece with opposite pole; Therefore, it must be left to the result of a magnetic field investigation, how the field formation and, concomitantly, the force on the blade cutting edge form - force effect 1.

 Force action 2 - moving electrical conductor in the field of a permanent magnet - depends on the previous investigation and the duration of the movement.

The German Utility Model DE 20 2006 017 634 discloses a shaving head for Naßrasierer before with at least two parallel but staggered blades, wherein between the at least two razor blades a permanent magnet with its pole faces - except for the blade tips - is integrally connected thereto, so that at a multiple arrangement of blades each blade is clearly polarized and with the result that the magnetic field strength in the area of the blade tips is most pronounced.

However, the magnetic field strength represents a vector consisting of an amount and an angle and magnitude and angle determine the alignment and alignment of the deformations on the razor blade cutting during the depilation - the cutting through the hair - by mass compaction and deformation at the Cutting edge and the blade have become dull, by stretching, the angle dictates the direction of stretching. If the extension of the shaving head is assumed to be infinite in depth and the plane arrangement is transformed into black Christoffel - a special form of the conformal mapping of polygonal bounded areas - FIG. 1 shows an approximate image of the field conditions with the Result that adSt. the strongest field changes the exit angles are not in the plane of the cutting edge and perpendicular to it - direction of the magnetically influenced deformations - force 1.

 According to a further embodiment, the handle has a diametrically magnetized permanent magnet arranged adjacent to the edges of the razor blades and having a magnetic field, one pole of which is arranged adjacent to the razor blade. Disposed adjacent the other pole of the permanent magnet is a ferromagnetic element having one end adjacent to the other pole of the magnet which extends over the handle and shaving head and the other end of which is adjacent the end of the razor blades opposite the cutting edge. By this arrangement, the razor blades are exposed to a magnetic field in their longitudinal direction.

In this case too, the field and potential lines of the magnetic vector field should be sketched and the exit angles at the cutting edges checked for parallelism with the blades, which is not apparent from the given arrangement - force effect 1.

With the aid of the German patent DE 10 2007 034 420 ^' Adjustable holding device with sharpening magnets ... already registered holding and sharpening devices for wet razors are to be improved so that as far as possible all razors available on the market can be accommodated in the device. For this purpose, the active magnetic part of the device was separated from the razor holder thereof and arranged rotatable / latchable and longitudinally displaceable within the receptacle. The receptacle is used for wall mounting and carries - similar to a seesaw - the cuboid-shaped active magnetic part, which consists of a two-pole permanent magnet and has on its underside lateral bearing surfaces for Naßrasiereraufnahme. It is envisaged that the user will uniquely set up his shaver in the device such that the blade blades are perpendicular to a pole face of the magnetic member and the remaining air gap is minimized.

 The disadvantages of a bipolar magnetic field characteristic have already been mentioned above; in relation to the vertical - center position of the blade to the pole face, she is this in a nearly field-free space; the force 1 is very low.

 The force does not change, the blade is moved in a field-free clearing in the direction of the tray - force 2 - or contacted for the purpose of current flow - force 3.

 Since in the required position of the blades to the pole surface, the lower edge of the blade carrier abuts the frame of the magnetic part, the distance / air gap between the pole face and blade cutting edge remains large; If the distance is reduced, the perpendicular position pole surface is lost to blade cutting edge - the deformations are directed so that the shaver acts dull - force effect. 1

The required angle adjustment of the perpendicular position poses a challenge for the user; the blades themselves are angled, the blades are angled in the blade carrier, the blade carrier is mounted angled to the Räsiererkopfstück and the head has an ergonomic angle to the handle. All publications presented are only partially or not at all suitable for specific use as a magnetic blade sharpener - especially not for a magnetic razor blade sharpener for preferably wet razor with an optimized magnetic circuit.

 The invention is therefore based on the object, a device according to the preamble of claim 1, a magnetic blade sharpener - in particular to create a magnetic razor blade sharpener for preferably wet shaver with an optimized magnetic circuit.

 This object is achieved by the characterizing features of claim 1; to advantageous embodiments, the dependent claims.

The aim is to build a magnetic blade sharpener - especially a magnetic razor blade sharpener for preferably wet razor with an optimized magnetic circuit according to force 1. The particular advantageous feature of the device according to the invention is that so hair cutting devices, especially razors designed with handles, head pieces and blade systems of different characteristics are, can be resharpened quickly, without interference and effectively with the indicated magnetic method. The inventive design of the sharpening magnet in the depositing and Nachsch sharpening device makes no demands on the user with respect to mathematical or physical knowledge, so that in particular regardless of the manufacturer-related angle of attack of the blades of a razor optimum spacing of the magnetic surface of the sharpener is substantially perpendicular to the blade plane. The magnetic attraction forces between Nachschärfmagnet and razor also support the positional parallelism of blade cutting edges to the longitudinal extent of the sharpening magnet during the sharpening process.

The storage and re-sharpening device according to the invention is advantageously designed as a stand device, in which the hair clipper is turned off in about 180 ° from the position of use rotated, substantially vertical position. This has the further advantage that a previously used, shaving foam or gel-cleaned hair trimmer dries without the rinse residue spreading and adhering over the blades, headpiece or handle. The bottom of the device can also be designed as a collector or provided with a drain device. Regardless of the position of the shaver in the storage and Nachschärfvorrichtung means are provided to supply the same back wall mounting by means of hooks, screws or gluing. Also, some remaining mounting skew of the device has no effect on the position of the razor in the device because of the magnetic attraction forces acting.

In a further advantageous embodiment, the sharpening magnet of the filing and sharpening device is ^' unilaterally multipolar ^' or ^' bilateral multipolar ^' , where ^' multipolar ^' means that in the longitudinal extent of the sharpening magnet individual magnets with alternating N (north) / S (south) polarity string together, such as NSNSN or SNSNS polarity, but not for the Mägnetische field distribution the alternation of the polarity NS or SN is decisive, but a bilateral pole-equal termination reduces stray field - thus reducing losses - and environmentally friendly.

^' One-sided ^' multipolar means that the multipolar polarity configuration of the sharpening magnet is solely unilaterally formed on the blade facing the shaver (front), and ^' bilateral ^' multipolar means that the multipolar polarity formation of the sharpening magnet is also on the rear, blade-facing surface (Rear side) is configured, but opposite polarity, such as an N pole of the front, an S-pole of the back and an S-pole facing the front and an N-pole of the back. Representation of field lines help for the analogy consideration; B-induction lines are lines of the same B amount, are always self-contained and have a flow character - without beginning and end. Outside the magnetic voltage source they run from the N-pole to the S-pole.

According to the further preferred embodiment, the sharpening magnet of the filing and sharpening device is arranged on one side multipolar and adjacent gegenpolarisierte individual magnets each form a magnetic circuit with the B-field profile N-pole - air gap - blade - air gap - S-Pol. Magnets and blades are magnetic conductors, air gaps cause magnetic losses and should be kept small. Since the pole face of the sharpening magnet or those of the individual magnets are level with the blades perpendicular to the blades, the B field course also effects a rectified force formation on the blade cutting edges, which corrects deformations deformed due to depilation in accordance with the direction of the force vector. Moreover, the tightening forces acting on the blades contribute to the spacing of the sharpening magnet and the blade set in order to reduce air gap.

Basically, a two-sided multipolar manifestation of the sharpening magnet is possible; the additional magnetic leakage losses of the N-pole field curves from the sharpening magnet N pole faces facing the blade cutting edges to the rear S pole faces of the sharpening magnet facing away from the blade cutting edges and vice versa do not contribute to force formation for aligning the deflections.

A preferred embodiment of the inventive novelty provides the arrangement of an adjacent parallelepipedal magnet adjacent opposing polarity preferably one-sided multipolar Schärfmagneten in the base area of a C-shaped filing and Nachschärfvorrichtung ago, the hair clipper, as the Naßrasierer, reversed to its direction of use and with the blade set is placed pointing in the direction of the sharpening magnet. The storage and sharpening device should be made of a magnetically non-conductive material, such as plastic, wherein the individual magnets are glued or latched integrally connected by means of a frame or frameless or as a magnetic block with / without frame, wherein in a further advantageous Form a attached to the upper end of the device clamping device or recording the deposited Naßrasierer additional support. Another embodiment of the inventive novelty is given by the fact that the individual magnets of the sharpener have a cylindrical shape and polarity fit one-sided multipolar or two-sided multipolar and frameless glued to the filing and sharpening device or snapped connected in one piece. A further advantageous embodiment of the invention provides that the individual magnets receive an additional magnetically conductive yoke - also prefabricated as a yoke-single magnet assembly, which in particular in the case of two-sided multipolar Schärfmagnet-execution Streusseldmindernd - thus loss-reducing - and environmentally friendly. The provided at the upper end of the storage and sharpening device recording as a support for the stored hair clipper is designed as a bow-shaped headband for inserting the razor or the handle.

A further embodiment of the invention provides for optimizing the magnetic circuit in such a way that the large magnetic resistance - caused by the air gap between sharpening magnet and blade set - a reduction learns that the blade-facing surface of the sharpening magnet is adapted to the contour of the blade set. For this purpose, this magnetic surface receives - viewed from the side - a sawtooth structure whose angles are largely adapted to the angular positions of the blade cutting, wherein a virtual extension of the cutting edge in the sharpening magnet is continued such that it is perpendicular to the one surface portion and parallel to the other of the sawtooth surface runs.

The use of modern materials, such as plastic material mixed with magnetic powder, allows the production of plastic-bonded permanent magnets; such magnets offer important advantages in terms of shaping, such as the production of complex, filigree and precise moldings. Production methods are spraying of polyamide or PPS plastics, pressing of resins, calendering of elastomers or extrusion of ^' magnetic rubber ^' . Basically, unmagnetized maghet powder comes into the processing; the magnetization takes place during or after the shaping process. An optimization phase completes the manufacturing process, such as the determination of the magnetic volume, the definition of the geometry of the magnetic field and the characteristic of the magnetic field profile by the degree of filling in the plastic matrix, the density of the magnetic powder in the plastic, the structure of the magnetic powder, the viscosity of the plastic and the interpretation the dimensions and position of the injection point.

If this technology with the aim of field optimization by air gap reduction transferred to the previous, resulting in a cuboid single magnet with a sawtooth, the blade facing surface, wherein the number and the periodicity of the teeth of the blades are proportionally adapted, the blade cutting perpendicular to the Katheten formed triangular magnetic surfaces and each of the follower catheter of the magnetic surface are arranged parallel to the blade cutting edge, wherein the depth of the magnetic surface in the individual magnet corresponds to the pole width. The sum of the hypotenuses of the sawtooth triangles corresponds to the overall height of the individual magnet. A further embodiment of the invention provides that the individual magnet is formed with or without frame to a magnetic block or is already polarized as a magnetic block with individual magnets. Preferably, the saw tooth-shaped opposed surface of magnetically conductive material of non-saturated thickness forms the back stray-field loss preventing yoke. As described above for the other magnetic arrangements of parallelepiped or cylindrical magnets, this sawtooth-shaped magnetic circuit also fits in the bottom area of a C-shaped storage and re-sharpening device.

The subject matter of the invention will be further clarified below with reference to the accompanying drawings of exemplary embodiments. Show it

Fig. 1 level field arrangement with offset poles

Fig. 2 filing and Nachschärfvorrichtung with cuboid magnets

 a) Individual magnets, frame and device in exploded view b) device with hair clipper in perspective

Fig. 3 storage and Nachschärfvorrichtung with cylindrical magnet

 and yoke in exploded view

Fig. 4 storage and re-sharpening device with optimized magnetic circuit

 a) single magnet in perspective

 b) Single magnet with frame in front view

 c) Device with magnetic frame in perspective

 d) Device installation situation with razor head in side view

 e) Device with hair clipper in side view

The same and equivalent components of the embodiments are each provided with the same reference numerals in the figures.

The description of the device according to the invention will be continued with reference to the explanation of the figures.

Fig. 1 shows a planar array 1 with spatially offset poles, in particular, the field formation is approximately illustrated at the pole ends. In the field of homogeneous field distribution, the magnet arrangement 2 is assumed, while the poles 3, 4 are formed according to the patent application by the blades, wherein the pole A 3 as N (north) pole and the pole B 4 as S (south) pole In the illustration, the lines extending substantially vertically form 5 field lines of constant induction B and the substantially horizontal lines 6 potential lines of constant magnetic voltage V. Field and potential lines are always perpendicular in the points of intersection 9 each other; two adjacent field lines form a flow tube 7 kon- Constant flow and two adjacent potential lines 8 always contain a constant potential or voltage difference. The pole ends 10, 11 have the densest field distribution B, V; however, it becomes clear that the force-determining B field line exit angle at the pole ends does not run parallel to the poles / blades and thus aligns the blade tips of the blades with the B exit angle at the pole end - force effect 1.

According to Fig. 2 is a storage and Nachschärfvorrichtung 1 20 with cuboid magnets, in Fig. 2 a) as individual magnets with frame and device in exploded view and in Fig. 2 b) shown as a device with hair trimmer 80 in perspective. The device provides a rectangular parallelepipedal magnet 21 adjacent opposing polarity NSN ... preferably unilaterally multipolar 29 created sharpening mag neten in a receptacle 24 arranged at an angle in the base area of a C-shaped 23 filing and Nachschärfvorrichtung ago, the hair clipper as the Naßrasierer consisting essentially of a handle 81, a receiving bracket 82, a blade receptacle 83 and a blade set 84 reversed to its direction of use and with the blade set pointing in the direction of the sharpening magnet on a support member 25 is stored. The storage and sharpening device should be made of a magnetically non-conductive material, such as plastic, the individual magnets are glued or latched integrally connected by means of a frame 22 or frameless or as a magnetic block with / without frame, wherein in another Advantageous expression attached to the upper end of the device clamping device or recording consisting of a bracket 26 and a holder 27, the stored Naßrasierer additional support.

The blade set 84 consists of one or more (commercially available up to 6 pieces) individual blades whose edges are angled and find their hold in the blade head 83. The cutters each span a plane which, in the case of a hair clipper 80 positioned on the support element 25 of the C-shaped 23, 24 device 20, positioned by the bracket 26 and the holder 27, is perpendicular to the surface of the magnet arrangement flush with the support surface 23 29 comes to rest. By definition, the B field lines emerging from an N pole of the magnet arrangement close over the air gap, the blade edge - the iron path, the further air gap with the adjacent S pole (s) of the magnet arrangement. By Naßrasierer use possibly deformed blade tips of the cutting edges of the blades are directed by the B-field proportional force effects - force 1 -, whereby the preferred position of the blades or the cutting of the blades to the magnet assembly is justified.

Basically, a two-sided multipolar form of expression 30 adjacent opposing polarity NSN ... -N and (S) - (N) - (S) ... - (S) of the sharpening magnet is possible; the additional magnetic leakage losses of the N-pole field curves from the sharpening magnet N pole faces facing the blade cutting edges to the rearward (S) pole faces of the sharpening magnet facing away from the blade cutting edges and vice versa do not contribute to the force formation for aligning the blade cutting edge. the deformations at. Regardless of the position of the shaver 80 in the storage and Nachschärfvorrichtung 20 means 28 are provided to supply the same back wall mounting by means of hooks, screws or gluing; Also, a certain amount of assembly-related skew of the device has no bearing on the position of the razor in the device due to the magnetic attraction forces acting.

Another embodiment of the device is presented by the filing and Nachschärfvorrichtung 2 40 of FIG. 3 in exploded view. The individual magnets 41 of the sharpener have a cylindrical design and are polarity-compliant NSN ... -N or SNS ... -S one-sided multipolar or two-sided multipolar, in adjacent opposing polarity NSN ... -N and (S) - (N) - (S) ... - (S) and frameless glued to the storage and sharpening device or snapped connected in one piece. The individual magnets are positioned by the guide 44 of the front plate 47 of the tray 43; the exemplary hollow storage body is closed by the side walls 48. A rear wall 49 and a bottom plate 50 - stabilized by two reinforcements 51 - form, as an assembly, the rear part of the device, closing the cavity of the storage body.

A further advantageous embodiment of the invention provides that the individual magnets 41 receive an additional magnetically conductive yoke 42 - also prefabricated as a yoke-single magnet assembly, which in particular in the case of two-sided multipolar Schärfmagnet-execution Streusseldmindernd - thus loss-reducing - and thus environmentally friendly , The reinforcing elements 51 provide recesses 52 for receiving the magnet arrangement consisting of individual magnets and yoke or mechanical yoke replacement.

The provided at the upper end of the storage and Nachschärfvorrichtung 40 recording as a support for the stored hair clipper 80 is designed as an arcuate bracket 46 for the passage of the razor or the handle 81. The handling takes place as in the device 1 20; the hair trimmer is rotated against the position of use by 180 ° and placed with the blade head 83 on the support member 45 of the tray 43; the edges of the blades 84 are then in close proximity to the magnet arrangement 41 with the blade cutting plane perpendicular to the flush surface of the individual magnet and storage body 47 standing. The magnetic field education with the force acting on the cutting edges of the blades - after force 1 - as shown in the filing and Nachschärfvorrichtung 1 - optimized by the magnetically conductive yoke 42nd

With the design Fig. 4, a storage and Nachscharfvorrichtung 3 60 is presented with optimized magnetic circuit such that the large magnetic resistance - caused by the air gap between sharpening 61 and blade set 84 - a reduction learns by the fact that the blade-facing surface of the sharpening magnet of the contour the blade set is adjusted. For this purpose, this magnetic surface receives - viewed laterally - a sawtooth structure 62, whose Angle α, ß 65, 66 are largely adapted to the angular positions of the blade cutting of resting in the filing and Nachschärfvorrichtung hair clipper 80, wherein the number and the periodicity of the teeth of the blades are proportionally consistent and a virtual extension of the cutting edge of the blade cutting edge in the sharpening magnet a continuation learns such that it is perpendicular to the surface portion 2 64 and parallel to the other surface portion 1 63 of the sawtooth surface.

Fig. 4 a) shows the individual magnet 61 in a perspective view; the sawtooth surface 62 facing the blade set 84 is divided into the surface portion 1 63 and the surface portion 2 64. For the dimensioning of the individual magnet a right-handed Cartesian coordinate system of coordinates x, y and z was assumed, where x is the depth, y the pole width and z the height of the individual magnet - corresponding to at least the height of the blade set of hair clipper 80 - indicates. The surface portion 1 assumes an angle α 65 to the y / z plane-triangularly reduced Ankathete to the hypotenuse-and the surface portion 2 to the y / z plane an angle β 66-triangular reduced counter-catheter to the hypotenuse-a.

The magnetic circuit of the device 60 with hair clipper 80 is as follows, wherein the field lines B and the magnetic voltage V always prefer the path of least magnetic resistance. B-field lines emerge from the sawtooth-shaped N-pole single-magnetic surface 62 -in particular over the surface portion 2 64 closest to the blade edge 84- bridge the air gap, close over the blade-the iron path and the further air gap over the adjacent individual magnets 61 opposite S-polarity. Preference is given to a single-sided multipolar magnet arrangement of the depositing and re-sharpening device with a rear yoke support 76 for the magnetic circuit opposite the sawtooth surface, in which magnets with alternating N / S or S / N polarity become one in y-longitudinal extension NSN- ... -N or SNS- ... -S polarity with a stray field-reducing double-sided. juxtapose pole-like conclusion, wherein the y-longitudinal extent of at least the razor head width 82, 83 should correspond. Since the blade edges are perpendicularly air-gap-reduced and close to the magnetic surfaces and - after force 1 - the force training proportional to the B magnetic field training follows, an alignment of deformed due to the depilation deformations of the cutting tips of the blades is parallel to the blade plane.

A further embodiment of the invention provides that the individual magnet 61 is formed with or without frame 67 to a magnetic block or is already polarized as a magnetic block with individual magnets. Preferably, the saw tooth-shaped opposing surface in the y / z plane of magnetically conductive material of non-saturated thickness forms the back stray-field-loss reducing yoke 76. Fig. 4 b) illustrates the arrangement of the individual magnet with frame in front view and Fig. 4 c) shows the installation situation of the magnetic frame in the storage and Nachschärfvorrichtung in perspective. As already described in the above-presented magnetic arrangements of parallelepiped or cylindrical magnets 20, 21, 40, 41, this magnetic circuit 61 with a sawtooth-shaped surface 62 is also accommodated in the base region 69 of a C-shaped storage and re-sharpening device 60. 4 d) shows the installation situation of the depositing and re-sharpening device with razor head 82, 83 in a side view, an excerpt shown in section, and FIG. 4 e) shows an overall side view of the depositing and re-sharpening device with the hair trimmer 80.

Advantageous developments of the invention are the subject of the dependent claims; The numerous possibilities and advantages of the embodiment of the invention are reflected in the number of patent claims.

LIST OF REFERENCE NUMBERS

1 field arrangement with distribution

 2 magnet arrangement

 3 Pol A - N (North) pole

 4 Pol B - S (South) pole

 5 field line - induction B

 6 potential line - magnetic voltage V

7 river tube

 8 potential difference

 9 crossing point

 10 pole A - pole end

 11 Pol B - Polende

 20 Storage / re-sharpening device 1

 21 single magnet, cuboid

 22 magnetic frame

 23 storage body

 24 recording

 25 support element

 26 hanger

 27 holders

 28 hole

 29 magnet arrangement, multipolar one-sided

30 magnet arrangement, multipolar two-sided

40 filing / re-sharpening device 2

 41 single magnet, cylindrical

 42 yoke

 43 storage body

 44 leadership

 45 support element

 46 bracket, holder

 47 front

 48 side wall

 49 rear wall

 50 floor

 51 gain

 52 recording

60 depositing / re-sharpening device 3

 61 single magnet

 62 sawtooth surface

 63 surface section 1

 64 area section 2

 65 angle α

66 angle ß 7 frames

 8 storage body

 9 recording, leadership

 0 support element

 71 Strap, holder

 72 front

 73 sidewall

 74 rear wall

 75 floor

 76 yoke

 80 Hair clipper, wet razor

81 handle

 82 pickup bracket

 83 blade shot, -köpf

 84 blade set

C shape, design

 North pole (facing the sound)

S south pole (facing the sound)

(N) North Pole (facing away from the sound)

(S) south pole (away from the blade) α angle

ß angle

sin α angular function

cos α angular function

x coordinate

y coordinate

z coordinate

 XE measurement depth

y-E measure pole width

 ZE measure height

Claims

claims 1. Magnetic blade sharpener - in particular magnetic razor blade sharpener for preferably wet razor with optimized magnetic circuit, characterized in that  - The magnetic blade sharpener consists of a C-shaped storage and Nachschärfvorrichtung (60),  - The device has a frame-like storage body (68) as a stand or wall unit,  a support element (70) for receiving the hair trimming device (80) against the direction of use exists at the lower inner end,  - There is at the upper inner end of a bracket or holder (71) for receiving the handle (81) of the hair clipper  at the lower inner end of the support element in parallel adjacent a sharpening magnet is integrally connected to the storage body flush with the surface,  - The blade of the deposited hair clipper facing surface of the contour of the blade set (84) air gap-reducing by a sawtooth structure (62) with two surface sections 1, 2 (63, 64) per tooth adapted such that - The plane of the blade cutting on a surface portion 2 (64) is perpendicular and parallel to the second surface portion 1 (63). 2. Magnetic blade sharpener according to claim 1, characterized in that the sharpening magnet consists of individual magnets (61),  - Are designed with or without frame (67) to a magnetic block with alternating poles or  - Which is already designed as a magnetic block with individual magnets in adjacent opposite polarity and  - With the storage body (68) of the storage and Nachschärfvorrichtung (60) on one side multipolar or two-sided multipolar pronounced integrally connected. 3. Magnetic blade sharpener according to at least one of claims 1 and 2, characterized in that  - The sharpening magnet of individual magnets (61) constructed multipolar sharpening on its the blade-facing sawtooth formed surface (62) opposite rear surface by a magnetically conductive, Streufeldreduzierendes yoke (76) non-saturated material thickness is integrally connected, wherein  - The yoke can also be part of the magnet block. 4. Magnetic blade sharpener according to at least one of claims 1 to 3, characterized in that  the sharpening magnet of individual magnets (61) forming a magnetic circuit, in which magnets with alternating N (north) / S (south) or S / N polarity become NSN-... N or SNS-.S-multipolar with a stray field-reducing string together on both sides of the same pole conclusion, wherein - The longitudinal extent of at least the razor head width (82, 83) corresponds. 5. Magnetic blade sharpener according to at least one of claims 1 to 4, characterized in that  - The individual magnets (61) by a clockwise Cartesian coordinate system of the coordinates (x, y, z) are dimensioned, wherein  - The measure XE the depth, the measure yE the pole width and the measure ZE the height of the individual magnet - corresponding to at least the height of the blade set (84) of the hair clipper (80) - determined. 6. Magnetic blade sharpener according to at least one of claims 1 to 5, characterized in that  - The blade facing the contour of the blade set (84) air gap reducing adapted surface (62) of the individual magnets (61) by a sawtooth structure with two surface sections 1, 2 (63, 64) per tooth adapted such that  - The surface portion 1 (63) to the y / z plane an angle α (65) and the surface portion 2 (64) to the y / z plane an angle ß (66) assume,  - The angle α corresponds to the angle of the blade plane of the blade set (84) of the deposited hair clipper (80) to the y / z plane of the individual magnet and  - The angle ß = 90 ° - calculated angle α. 7. Magnetic blade sharpener with wall mount according to at least one of claims 1 to 6, characterized in that  - The blade-facing sawtooth formed surface (62) of the individual magnets (61), each with two surface portions 1, 2 (63, 64) per tooth is formed such that - The surface portion 1 (63) from the distance of the blades of the blade set (84) of the deposited hair clipper (80) x cos α x razor head width (82, 83) - Calculate the surface portion 2 (64) from the distance of the blades of the blade set (84) of the deposited hair clipper (80) x sin α x razor head width (82, 83)  - Are defined by area section 2 of the magnetic Nutzfluß and by area section 1 of the leakage flux. 8. A magnetic blade sharpener according to at least one of claims 1 to 7, characterized in that  - The blade-facing sawtooth formed surface (62) of the individual magnets (61) is formed with two surface portions 1, 2 (63, 64) per tooth  - The angle α corresponds to the angle of the blade plane of the blade set (84) of the stored hair clipper (80) to the y / z plane of the individual magnet  - Reduced at decreasing angle α of the surface portion 2 and the surface portion 1 increases - Increases with increasing angle α of the surface portion 2 and the surface portion 1 is reduced. 9. Magnetic blade sharpener according to at least one of claims 1 to 8, characterized in that  - The narrow sides of the surface portions 1, 2 (63, 64) form the Ankathete and the Gegenkathete a right triangle  - the right angle forms the circumferential angle in a semi-circle  - The angle α corresponds to the angle of the blade plane of the blade set (84) of the deposited hair clipper (80) to the y / z plane of the individual magnet  - The hypotenuse of the right triangle is formed by the blade spacing of the blade set (84). 10. Magnetic blade sharpener according to at least one of claims 1 to 9, characterized in that  - The C-shaped filing and Nachschärfvorrichtung 1, 2, 3 (20, 40, 60) - except the sharpening magnet without / with yoke - made of magnetically non-conductive material.