Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
  • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
  • B26B21/08—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving changeable blades
  • B26B21/14—Safety razors with one or more blades arranged transversely to the handle
  • B26B21/38—Safety razors with one or more blades arranged transversely to the handle with provision for reciprocating the blade by means other than rollers

Definitions

• the invention relates to a vibrating razor with a transparent blade and more particularly a set of means intended to improve the efficiency and reliability of ra ⁇ evenings of this type currently known.
• It also relates to a manufacturing method particularly adapted to the constitution of such a razor, so that the manufacturing cost of the razor is as low as possible.
• the razor object of the invention, is of the type in which the blade is connected to a support by appropriate means of holding, this support itself being connected to a transverse handle at the cutting edge of the blade and which constitutes the gripping and pulling member of the razor.
• the main concern in a vibrating razor with a sharp blade must therefore be to ensure total solidarity at least in the direction of the sharp edge of the blade, between the latter and the handle which can still be designated as the gripping member. and traction.
• the means intended to allow the replacement of the blade holder head, are of different designs, but none is designed to oppose a slight displacement of the blade holder element under the effect of the forces of 'inertia developed on the blade or on the blade holder and which have been mentioned above; it is also necessary to see the reason in the reason in the fact that in such razors devoid of vibratory device, the question does not arise since ⁇ the forces exerted on the blade are limited to the pulling action which s 'performs in the axial direction of the handle that is to say perpendicular to the cutting edge of said blade.
• blade will designate both the blade itself as well as the assembly of the blade and of a carrier element, dis ⁇ tincture of the "razor head", carrier element in which it could, according to certain embodiments, be anchored in a solid fashion, the said assembly thus defined being, in this case, generally removable for replacement, after wear of the blade.
• the invention makes it possible, in particular, to eliminate the drawbacks of the state of the art which have just been stated.
• the invention relates to a vibrating razor with a sharp blade in which the blade is connected to a support by appropriate holding means, this support itself being connected to a handle or body of razor extending trans- - versal ent at the cutting edge of the blade and which constitutes the gripping and traction member of the razor, handle which has, in an integral manner, in its part which undergoes the gripping and traction action of the user, means for fixing an electric motor whose axis of rotation co-axial to the handle, carries on its end oriented towards the blade support and in an integral manner, an eccentric counterweight which, thus driven in rotation by the axis of the motor, determines the entry into vibration of the whole of the handle and of the blade support which is thus animated by a vibratory movement of substantially circular shape in a plane perpendicular to the axis of the motor, the cutting edge of the blade remaining substantially parallel to itself even under the gripping action of the user's hand, electrical supply means being also arranged in the end of the handle opposite to the head, characterized in
• the groups of transverse faces which thus come into close contact being at least two in number and arranged so as to obstruct, in respectively opposite directions, at relative movement of the blade head and the razor body parallel to the cutting edge of the blade.
• the invention also relates to a method of manufacturing a
• REPLACEMENT SHEET vibrating razor with blade as it has just been defined generally consisting in constituting the razor body in two half shells intended to be joined and soli ⁇ darisés on either side of a longitudi joint plane - nal extending from the extreme upper face of the razor body on which the locking well opens and substantially in the median plane of said well, until at the opposite extreme lower part of said razor body, the two half shells being said to be "ventral” as to that which is situated on the same side as the cutting edge of the blade and “dorsal” as to the other, the set of said half shells being intended to constitute a hollow case, each of them having on its internal face of the conjugated elements coming from molding, for example in the form of strips, arranged so as to constitute by their meeting opposite, on the one hand, the transverse walls of the well of locking thus formed between the free edgesd es corresponding lamellae, the side walls of the well being constituted by similar lamellae carried by the ventral half-shell and carrying, by molding, projecting
• FIGS. 1A, 1B are sections with cutaway and elé ⁇ partial elevations by II in FIGS. 2A, 2B, made along the joint plane of the two half shells, constituting the razor body and its extension in the blade support head, the upper part of FIG. IA being shown in dashed outline and in detail, clearly enlarged in FIG. 1B
• FIGS. 2A, 2B are similar sections by II-II of FIGS. 1A, 1B, produced and enlarged under the same conditions as above
• FIGS. 3, 4 and 5 are sections with partial elevations respectively by III-III, IV-IV and VV of FIG. 2,
• FIG. 6 is an exploded view of the blade holder head
• FIG. 7 is a theoretical schematic representation of the trajectory of a point on the blade when the gripping member is simply held between the fingers of the user and in the absence of any contact with the surface to be shaved ,
• Figure 8 is a theoretical schematic view similar to Figure 7 of the trajectory of the same point of the blade during the shaving action.
• FIG. 9 is a schematic elevation view of an alternative embodiment
• FIG. 10 is a partial view on a large scale of the embodiment of FIGS. 1 to 7 as regards the mode of cooperation of the conjugate locking elements, respectively carried by the ver ⁇ rusting plate and by the lateral slats of the rusting well,
• FIGS. 11 and 12 are the plan views of the half ventral and dorsal half of the razor body, respectively, according to another embodiment.
• Figures 13 and 14 are sections with partial elevation - • respectively according to XIII-XIII and XIV-XIV of Figures 11 and 12, -the lower part of each of them having been torn off since its details are not part of the invention,
• FIG. 15 is a section similar to FIGS. 13 and 14 showing, schematically and partially cut away, the initial phase of the positioning of the motor on
• FIG. 16 is a view similar to FIG. 15 after the dorsal and ventral shells have coincided
• FIG. 17 is a diagrammatic view of the rotary bayonet plug intended to be introduced into the lower part of the body of the razor formed in FIG. 16 and intended to maintain the electric battery (not shown) and the electrical connection between the negative pole of the engine supply battery and the corresponding contact metal strip,
• FIGS. 18 and 19 are sections respectively by XVIII-XVIII and XIX-XIX of the ventral part of FIG. 15,
• FIG. 20 is a similar section on a larger scale by XX- X of FIG. 15, -
• Figure 21 is a partial elevational view schemati ⁇ that a razor body according to Figure 16, provided with its blade holder head
• FIG. 22 a large-scale section with partial elevation of the blade holder head of FIG. 21.
• FIGS. 1 to 8 1 designates the blade whose edge tran ⁇ edge carries * > the reference 2.
• 3 designates the whole of a blade support head which comprises an upper cover 4 bearing, perpendicular to its lower face intended to receive the blade, a locking plate 26.
• the support head 3 is held, in a removable manner and by means which will be described below, in close contact by its lower face 3A with the corresponding face 6A of the upper upper part 6 of the razor body 5.
• the razor body 5 consists of two half-shells 51, 52, arranged on either side of a joint plane 50 and they are made of plastic material for the sake of lightness and ease of assembly of the constituent elements, as will be explained below.
• the assembly of the support head 3 is also made, for the same reasons, of plastic material.
• the razor body 5 extends perpendicular to the cutting edge 2.
• the support head 3 carries, on its lower face 30, receiving the blade, and perpendicular to this face, the locking plate 26 which is integral therewith.
• This plate 26 is intended to be introduced with a j.eu as reduced as possible considered tan in the direction of the cutting edge of the blade than in the direction perpendicular to the latter, in a well 31 of corresponding dimensions arranged in the part upper end 6 of the razor body 5 with which the lower face 30 of the support head 3 is intended to come into close contact with the interposition of the blade and, optionally of a cover 37 intended to mask the latter and whose other functions will be described in detail below.
• the well 31 extends in the said upper end portion 6 longitudinally thereto, that is to say transversely to the cutting edge 2 of the blade 1.
• the underside 30 of the cover 4 is substantially flat and has a length at least equal to that of the blade which is intended to come into contact with it.
• Said lower face 30 of the cover 4 carries, in the middle of its length, the locking plate 26 which is
• REPLACEMENT SHEET integral and ensures the narrow positioning and locking of the support head by its lower peripheral edge 3A on the extreme upper face 6A of the razor body 5.
• said wafer 26 has in the vicinity of its free end 33, opposite the cover, 4 and on each of its lateral edges, respectively two notches 34 intended to cooperate with elastic locking means carrying, in the vicinity of their free ends, a boss 35 in the form of a spherical cap or in the form of a segment of sphere or cylinder intended for cooperate closely, with the corresponding notch 34.
• Each elastic means is constituted by a strip 27 secured to the inner wall 36 of the upper part 6 of the razor body 5.
• the lateral edges 49 of the plate 26 present at the end portion 33 of said plate a bevel shape 43 intended to facilitate the introduction of the plate 26 into the well 31 as well as the erasure of the elastic locking means 27/35 before they penetrate into their corresponding slots 34 in order to • achieve said narrow locking of the support head 3 on the upper part 6 of the razor body 5.
• the locking elements 35 cooperate with the notches 34 by a face 34A thereof inclined towards the blade 1, so as to allow the withdrawal of the support head by simple traction exerted on the latter, traction which determines the spacing lamellae 27 by cooperation of the faces 34A of the notches 34 with the inclined faces 35A which make them opposite the locking elements 35.
• the part 35A of the locking boss 35 subjects the inclined face 34A of the notch 34 at a force determined by the elastic pressure exerted by the lamellae 27 of which the said bosses are integral and which are formed for this purpose in the extreme upper part, of which they are integral, dumancheoucorpsde ra s oir5.
• the lower edge ' 3A of the cover 4 then being, by definition. from its locking position, in close contact with 'the upper end face 6A of the body 5, the locking plate 26 is therefore subjected to a health compo ⁇ of said force acting in the direction opposite to the face 30 in which it is solidarity, material direction. Seed in Figure 10 by the arrow FI, this component firmly applying said lower edge 3A of the cover 4 of the support head 3. against the end face 6A. body 5.
• the optimal angle of inclination of the face 34A of the notch 34 relative to the lateral face such as 49 of the plate 26 on which • it is formed is of the order of 30 ° to 45 °.
• the lower face 30 of the door cover substantially in the mean plane of the plate 26, respectively at least two nipples 32 hot-swappable for the purpose of fixing the blade 1, suitably perforated at 39.40, so as to be traversed, practically without play, by said pins 32 and by the plate 26 for locking and positioning.
• the blade 1 is covered by a cover 37 in the form of a plate of length substantially equal to that of the said blade 1 and perforated at 41, 42 in the same way as the latter, the pins 32 being of such length that 'after the blade 1 has been put in place until it comes to bear against the underside 30 of the cover 4, the locking plate 26 and the pins 32 passing through their corresponding openings respectively, the said pins protrude slightly above the cover 37 so as to allow them to be subjected to hot crushing with a view to firmly joining together with respect to each other the various censtituent elements of the support head 3 and, in particular, the firm fixing of the blade 1 with respect to these.
• the cover 37 advantageously has the shape of a wedge, the thinner edge 44 of which is intended to be adjacent to the cutting edge 2 of the blade 1, while its longitudinal edge opposite 45 is substantially thicker so as to allow, in the intermediate longitudinal part 46, thus made thicker at the level of the studs 42, the formation of housings 47 formed in the thickness of the cover, intended to receive the extreme part of the nipples which form a thin head after hot crushing.
• the locking plate 26 and the pins 32 are dimensioned and arranged so that, after assembly, the cutting edge 2 of the blade 1 is slightly projecting from the edges corresponding longitudinal sides of cover 4 and cover 37.
• said support head still carries, preferably at each of its ends and parallel to the median plane of the perpendicular locking plate 26 at the cutting edge 2 of the blade, respectively two transverse extensions in the form of an ear 58, intended to cooperate closely with two housings 59 of corresponding shape formed in the side walls 60 of said upper part; this cooperation takes place both by the faces facing one another 61, 62 of said ears and by their faces 63 corresponding to the end faces 64 of said housings, the faces 63 and the end faces 64 being transverse to the median plane of the locking plate 26 and thus completing the arrangement, practically without play, of the latter in its well 31.
• the cover 4 of the blade support head 3 has at each end of its upper part 29, a gripping boss 65 intended to facilitate the extraction of said support head from its well 31.
• the support head 3 has, in front of the edge tran ⁇ edge of the blade 1 and a short distance from the latter, an element coming from molding and parallel to said cutting edge which forms, is opposite to that -this, a security guard 66; this safety guard is, in the example, connected to each of the ends, of which it is integral, with the cover 4 by the transverse extensions thereof which constitute the transverse holding ears 58.
• the well 31 is, in fact.
• REPLACEMENT SHEET consisting, on the one hand, by the planes of the faces 48, oriented towards one another, of the strips 27 constituting the locking elements; the said faces 48 thus constitute the lateral kings of the well 31 of the plate 26 which cooperate closely with the lateral faces 49 of the said plate while the internal face of each of the half-shells 51-52 carries, in an integral manner, symmetrically with respect to the mean plane of the locking plate 26, between and parallel to the lamellae 27, respectively two groups of lamellae 28A, 28.B, coming from molding, oriented towards one another and constituting, by the extreme edges -57A, 57B, of said lamellae arranged parallel to the lock plate, the transverse walls of the well 31.
• the razor body 5 is, as has been said previously, constituted by the two half-shells 51, 52 arranged on either side of their longitudinal joint plane 50 which extends from the upper part 6 carrying the head support up to its opposite lower end portion '23 which carries the actuator button 56 and the element 56A intended to establish contact between the conductive strip 55 of one of the two contact strips 80 by which the motor 7, which will be described below, is supplied, - and the corresponding pole of the battery 82.
• the two half-shells 51, 52 are made integral by assembly means constituted, at their part close to # the support head, by a screw 69 which crosses the bottom of a well 70 coming from molding with the half-shell 52, the said screw cooperating with a corresponding borehole 71 formed in a pillar 72 coming from molding and integral with the other half-shell 51; at their opposite part 23, the half-coquil ⁇ are made integral for example by gluing or snap-fastening by a ring 73.
• the element ensuring the movement of the blade holder head 3 soli ⁇ daire the blade and the razor body as it was said above is constituted by an electric motor 7 fixed in REPLACEMENT the upper part of said razor body and supplied by the electric battery 82 via the contact strips 54, 55 fixed by hot crushing of the pins 83, 83A which pass through them, with the interposition of an insulating plate 84, which come , by simple elastic contact being made during assembly with the connection bars 80, make the said electrical supply to the motor 7.
• the motor 7 has a rotor axis 12, the said rotor not being shown in the figures, but arranged in a well known manner in the stator 10.
• the axis of rotation 12 pivots in the bearings 19, 20 and it carries, on its end oriented towards the support head, an eccentric counterweight 11 which communicates with the support head 3 carrying the blade 1 and with the razor body 5 of which it is made integral, a vibratory movement which determines each point of the blade to be made, as has been shown - on a large scale in FIG. 7, a . pseudo-circular path 8 when said member 5 is held slightly in hand by the operator without contact with the area to be shaved, the cutting edge 2 remaining substantially parallel to itself.
• the gripping action of the user is carried out substantially at the point 5A shown in FIG. 2 substantially at the lower third of the length of the entire razor. It follows that the gripping action determines. in addition, perpendicular to the cutting edge of the blade, a movement which is exerted alternately, at each rotation cycle, in the direction of the area to be shaved or on the skin of the user then in the opposite direction, substantially in a plane 21 perpendicular to the axis 12 and which makes, with the plane 22 of the blade, an angle A which has been chosen ex Southern ⁇ mentally as between 15 ° and 35 ° and preferably substantially equal to 25 °.
• the movement of the blade which has just been defined as to its direction perpendicular to the cutting edge 2, is in fact analyzed in a series of percussions and rapid withdrawals which, as well complete the action of pressures or rapid percussions alternating tending to favor the insertion of the cutting edge in the hair, that the relief of the rotation of the motor during the withdrawal which immediately follows this percussion action.
• the angle of inclination B of the plane of the blade relative to the axis 12 of the rotor is complementary to the angle A and approximately between 55 ° and 75 ° and, preferably substantially around 65 °.
• the razor body 5 has a portion 24 remote from the blade 1 and close to its end 23 opposite to said blade, which has an axis of symmetry 25, from the level of the end of the motor 7, located opposite the blade tan ⁇ say that the axis of the motor forms, with the said axis of symmetry, an obtuse angle open; in the direction (F) of the area to be shaved and between 165 ° and 145 degrees and preferably of the order of 155 °, this resulting from experimental observations.
• the engine rotational speed that determines the frequency of movement of "the blade is advantageously between 100 and 200 cycles / second and preferably substan- ment of the order of 150 cycles / second.
• the motor 7 is held in a housing constituted by the assembly of the ventral half-shell 51 and the golden half-shell 52.
• the stator of this motor has a flat part 89 which cooperates, on the side of the dorsal part, with the longitudinal strips 13 integral with the latter so as to prohibit its rotation relative to a razor 5.
• the motor rests on elements or lamellae 14 coming from molding and forming cradle.
• the motor is held by the blades 15, 16 which cooperate with the bearing 20, while at its opposite end 68 it is held by the blades 17, 18 which cooperate with the bearing 19, all of these different strips 13 to 18 coming from molding constituting a logs ent which firmly maintains the motor 7 in all directions and which prohibits its rotation relative to aucor D sdera ⁇ itself r 5 .
• FIG. 9 a slightly different embodiment has been shown comprising a support head with blade with two parallel and opposite cutting edges 102A, 102B, symmetrical in relation to a plane of symmetry 103 and possibly alternately usable, in a known way.
• the ears 104 of the head have end edges 105 cooperating with the end walls 106 of the corresponding housings which extend symmetrically with respect to the plane 103, the mean plane, or of symmetry of the locking plate, (not shown, as well as its corresponding well, in the schematic drawing of FIG. 9) f being
• REPLACEMENT SHEET confused with said plane 103 so as to allow re ⁇ turning of the head after wear of the cutting edge 102A.
• the constitution of the head and of its locking systems is the same as that previously described in FIGS. 1 to 6.
• Figures 11 to 20 are more especially intended for the re ⁇ present method for manufacturing the razor mentioned in the description, this manufacturing method being more particularly intended to allow rapid construction and little ⁇ expensive stage in the shaver of the assembly of its various constituent parts, the main ones of which have been referenced by increasing by 200 units, the reference figures used in Figures IA to 8 and 10 for the elements of these homologous or substantially corresponding figures of a mode of achievement to another.
• the manufacturing process consists in forming, by molding, the two ventral half-shells 251 and dorsal 252.
• the half-shell 251 has, for molding, on its internal face the elastic strips 227 which carry the locking bosses 235 intended to cooperate with the notches of the locking plate not shown in said figures. Said internal face also carries the lamellae 228B which are intended to constitute - by their extreme edges 257B one of the transverse walls of the locking well 231 whose other transverse wall is constituted by the extreme edges 257A of the lamellae 228A carried by the internal face of the dorsal half-shell 252.
• the two half shells 251 and 252 are intended to be joined and secured on either side of a longitudinal joint plane 250.
• the ventral half shell carries the protruding element 215 forming a fork 215A intended to receive the front bearing of the motor 207 while the latch-shaped locking element 218 is intended to support the rear bearing of said motor.
• a cradle element has formed, forming an elastic clamp 214 intended to temporarily receive and immobilize the motor 207 during assembly, both by its elastic branches 214 which embrace the cylindrical part of the motor and the flat part. ⁇ the ventral 289A of said motor.
• the locking elements of the dorsal flat part 289 consist of two housings 213 formed in the dorsal wall of the half shell 252 and which constitute, on the one hand, by their flat faces 213A formed in the extension one of the other the elements for holding the motor 207 and for preventing the rotation of its stator 210 after coincidence
• the opposite end faces 213B of said lo ⁇ gements constitute, in the same position, immobilizing elements of the motor 207.
• the method of manufacturing and mounting the body of the razor consists first of all in placing the motor in the ventral half-shell between the projecting element 215 and the element in shape lamella 218, the front bearing being introduced into the fork 215A while the motor body is embraced by the elastic branches 214 and thus held provisionally in place. In this position and as it appears in FIGS. 1 and 2, the bars 80 coming from the engine come elastically into contact with the lamellae 54 and 55.
• FIG. 21 shows, in partial schematic elevation, the body of such a razor constituted by the half shells 251, 252 and which, at its upper part carries the head, support for the blade 203 formed by the cover 204 which carries the ears 258 locking and inside which is fitted the blade cover 237 fixed with the interposition of the blade not shown on the underside 230 of the cover by hot crushing of the pins coming from molding as indicated in the description of the figure 6.
• the ears 258 of the head 203 cooperate by their faces 263 symmetrically arranged relative to the axis M of the locking plate with the end walls 264 of the corresponding housings formed at the end of the body of the razor and that, in addition, the upper faces 275 of the end part of the razor body which also form an obtuse angle between them similar to the preceding cooperate with the faces 276 of the blade cover 237 which form the same angle between them.

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• Life Sciences & Earth Sciences (AREA)
• Forests & Forestry (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Dry Shavers And Clippers (AREA)

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• 1985
  • 1985-02-25 FR FR8502719A patent/FR2577842A1/fr not_active Withdrawn
• 1986
  • 1986-02-25 EP EP19860901418 patent/EP0259304B1/de not_active Expired - Lifetime
  • 1986-02-25 WO PCT/FR1986/000061 patent/WO1986004854A1/fr active IP Right Grant
  • 1986-02-25 AU AU54593/86A patent/AU5459386A/en not_active Abandoned
  • 1986-02-25 DE DE8686901418T patent/DE3671186D1/de not_active Expired - Lifetime
  • 1986-02-25 MC MC86FR8600061D patent/MC1815A1/xx unknown

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