EP0463992A1 - Safety razor - Google Patents

Abstract

The razor according to the invention for flat and contour shaving enables, for example, a cosmetic or, if appropriate, a pharmaceutical preparation to be spread over the skin as a thin film for example shortly before shaving. It consists of an applicator part, a feeding part and a blade part, it being possible for the blade part and the applicator part together to form the razor head (1) and for the feeding part to form the handle (4) of the razor. The preparation is applied by means of a roller (3) or a corresponding spatula-shaped part, which takes along with it a thin film of the preparation when the razor is moved over the skin in the cutting direction and hence simultaneously in the application direction. If this is not the case, the preparation supply to the outside is cut off. The feeding apparatus consists of a preparation store (6) and a small pump (5) which is arranged in such a way that it can be easily actuated, during application, by the fingers guiding the razor and preparation is hence fed into the application device during shaving. The blade part comprises at least one blade which functionally interacts with the applicator part. <IMAGE>

Description

The invention is in the field of body care and relates to a shaving device for wet shaving (blade shaving) according to the preamble of the independent claims, with which hair on any part of the body (surface, rounding or contour shaving) using any preparation (for example problem shaving), that is applied by the device while shaving, can be cut off very close.

Before a blade shave, whether specific to women or men, a lubricant and softener (any problem shave) must be applied to the skin surface. The areal application of thin layers of such cosmetic (possibly pharmaceutical) preparations to the skin is usually carried out by hand or by spraying. A good dosage and a very regular distribution is difficult. It is unavoidable that part of the sometimes expensive preparation to be applied remains on the application hand. Furthermore, spray cans with which the application problem is also not solved are no longer desirable because of environmental pollution. In addition, with the known type of blade shaving, the hygiene problem always remains current.

For example, combined preparations for the treatment of body hair before shaving and freshly shaved skin after shaving are developed and continuously improved by the cosmetic industry. Such preparations are usually spread by hand on the skin in the form of a liquid, cream or foam before shaving. This means one step before shaving and a very desirable economical dosage is actually not possible. This is above all a disadvantage when using newer preparations which are so effective that even very small amounts, for example 150 to 250 mgr, can be sufficient for a shave. It is hardly possible to distribute such a small amount regularly by hand.

Devices that allow skin preparations to be automatically distributed to the skin during shaving have been developed at an early stage. However, these devices relate exclusively to men's shaving. For example, in U.S. Patents 4,074,429, 4,381,293 and 4,562,644 have been proposed to attach a skin preparation in solid form to the razor head in such a way that it is pulled over the skin when shaving in front of the blade or blades, a thin film of the preparation being rubbed onto the skin. However, the solid preparation changes its shape due to consumption and therefore often has to be adjusted in its position in relation to the blade. In addition, as stated, the preparation must have a firm consistency for keeping the shape.

It has also been proposed to apply liquid or foam-like preparations with parts of sponge-like material attached to the razor head (US Pat. Nos. 3,895,437 and 4,314,404) or with corresponding rubber rollers (US Patents 2,677,883 and 2,861,338). Even with these devices, it is difficult to put a regular preparation film on the Bring skin. In these devices, a container part is filled with a liquid or foam-like preparation which is applied to the skin with the application part. So no fresh fluid is fed in, but rather the fluid that has been used up is used again in a kind of recycling. After shaving, the rest of the preparation is removed by rinsing together with the used preparation. The main purpose of these devices is to avoid a pre-shaving treatment. There are therefore no dosing / application devices and the hygiene problem remains unsolved.

All of these approaches lack the correct interplay between the shaving preparation, its delivery to the shaving device and the blade part. The mere addition of any part of the preparation during a shaving process is insufficient. Especially when such additional mechanisms are arranged on existing shavers. For the correct interaction, a completely new device with coordinated functional parts is required.

It is now the object of the invention to provide such a device with the aid of which a pumpable preparation can be applied as a thin, regular layer over a wide area and in a manner suitable for cutting. The supply of preparation for application should only be possible during the application or pumping process. If there is no application, all feed paths should be automatically interrupted and shielded. For hygienic reasons, it should be prevented that contaminants are brought into the preparation from outside. It should be easy for the user to precisely dose the preparation. The device is said to be suitable for shaving for women as well as for men. For women-specific shaving, areas with greater curvatures, i.e. a rounded shave (concave and convex), are required, while for men-specific shaving, areas with predominantly less pronounced curves are in the foreground. However, the so-called "dimple problem" has always been an issue when it comes to men-specific shaving, and it is not least due to the requirements of women-specific shaving that these problems of male shaving can also be solved.

The above object is achieved by the device according to the characterizing parts of the independent claims. The device according to the invention consists of an applicator part, a fluid supply part and a blade part. The following description and the associated figures first deal generally with the interaction of the applicator part and the blade part (Figure 1), then in detail with the applicator part (Figures 2 and 3), with the feed part (Figures 4 to 8) and finally with the integration of the blade part to a razor according to the invention (Figures 9 to 19), in which the three parts come together to work.

This combination results in a new type of working interaction between the blade and the preparation or a functional interaction between the fluid (the preparation), which is hygienically housed in a reservoir, which is fed to an applicator part by means of a feeding part, which distributes the fluid in a metering manner at the cutting location on the hair and at the same time influencing the cutting position supports the blade part in its work. When the device is set down, the fluid supply is interrupted and brought into a washable or rinsable state, the preparation reservoir being shielded from the outside. The device can be used again in a hygienic condition without any additional manipulations. The blade part and applicator part are matched in terms of shape; the feed part including the reservoir is functionally matched to the applicator part, so that the applicator part on the one hand doses to the blade part and the shield to the dining area. Despite its double function, this intermediate link can be designed in many ways, can be adapted to any blade shape and controls the pumped-in flow of the fluid from its reservoir.

The application opening is preferably slit-shaped. The elements delimiting the opening can be movable or rigid. If they are movable, the mobility can be used for application (for example, rollers) or for shrinking to cover up the opening (for example, pivot axis of a roller, hinged or elastic lip) or for both. The elements delimiting the opening can be arranged in relation to the blade part (one or more cutting edges) in such a way that the cutting is mechanically supported, so that the geometry of the cutting edge (s) and opening limiting element (s) is of additional importance. The application opening is in turn connected via the feed part to the fluid reservoir, which is shielded by the feed channel and the delimiting elements, in order to meet the hygiene requirements. This also means that the feed section only works in one direction, namely the delivery direction. The pushing fluid "cleans" the infiltrating parts of the supply channel (s), but is nevertheless economical due to the integrated dosage. Here too, a double benefit is noted due to the inevitable dispensing direction and the metering ability of the device.

Fluid supply to the blade part: (Figures 1.1 to 1.4)

• Fig. 1.1 ein generelles Prinzipschema,
• Fig. 1.2 ein Prinzipschema für eine Ausfuhrungsform mit Applikationsspachteln,
• Fig. 1.3 dasselbe für eine Ausfuhrungsform mit Applikationsrolle,
• Fig. 1.4 ein schematisches, erfindungsgemässes Rasiergerät.

The following figures serve the general description of the fluid supply to a blade part, showing:

• 1.1 shows a general principle diagram,
• 1.2 shows a basic diagram for an embodiment with application spatulas,
• 1.3 the same for an embodiment with an application roller,
• 1.4 shows a schematic shaving device according to the invention.

1.1 shows an abstracted schematic representation of the feeding, application and cutting function of a shaving device according to the invention. With α is an application angle and with β is a cutting angle, the angle α being greater than the angle β for trouble-free shaving. The two angles relate to the skin surface H. Between the device parts defining the two angles to the skin, blades 2 and the outer fluid channel boundary 30.1, there is an applicator part (manipulation part) 30.2 which influences the cutting angle and which on the one hand delimits the application opening on the blade side and optionally the Fluid channel 10 is the closing part. A crossed double arrow shows the adjustment options. Pushed towards the skin surface, it causes a local pushing back of the skin surface H into the position H '. The scraping A, which is hair and abrasion from the preparation and skin, can be removed between the blade 2 and the manipulation part 30.2. In the fluid channel, the fluid is conveyed to the applicator part under a certain pump pressure (arrow p) and emerges at the application opening in the area of the skin surface. If the blade part is moved in the cutting direction, the applicator part distributes the preparation over the skin surface.

FIG. 1.2 also schematically shows an embodiment in which the fluid channel 10 of the applicator part is formed with spatula-shaped wall parts 30, 30.2. The applicator part 30.2 (manipulation part) influencing the cutting angle, which on the one hand delimits the application opening on the blade side and optionally by swiveling back the part closing the fluid channel 10 is indicated by a double arrow in its adjustment possibility. Depending on the length of the pivotable spatula part, the skin surface is influenced more or less, which is indicated by a local pushing back of the skin surface H into the position H '. Depending on the pivot position and length of the wall part 30.2, the outlet opening formed by the two wall parts 30.1 and 30.2 also changes, through which the fluid exits in the direction of the skin. If the spatula-shaped manipulator part 30.2 is brought into a rest position in which the outlet opening of the fluid channel 10 is closed, for example by means of spring pressure, a movement of the blade part in the cutting direction causes the latter to open, so that the fluid under pump pressure can emerge unhindered. At the same time it is spread by the spatula part 30.2 on the skin surface.

1.3 shows another embodiment in which the fluid channel 10 of the applicator part can be closed or at least narrowed by a roller-shaped addition to the wall parts 30.1, 30.2. The applicator part 30.2 (manipulation part) influencing the cutting angle is, for example, a cylindrical roller 3, which on the one hand delimits the application opening on the blade side and partially covers the fluid channel by its position. The adjustment options are indicated by a double arrow if the roller 3 is mounted in a slot-shaped bearing. Depending on the position of the swiveling roller part, the channel is covered more or less. Depending on the roller diameter, the skin surface is influenced more or less, that is, locally pushed back into a position H ', as shown in Figure 1.2. If the roller-shaped manipulator part 30.2 is brought into a rest position, in which the outlet opening of the fluid channel 10 is closed, for example by means of spring pressure, a movement of the blade part in the cutting direction causes the latter to open, so that the fluid under pump pressure can emerge unhindered. At the same time, roller part 30.2 spreads it on the skin surface.

1.4 shows a schematic section through an exemplary embodiment of the device according to the invention, which consists of the three parts, namely an applicator, a cutting device and a feed device from which the preparation is fed into the applicator. The applicator corresponds to the roller solution according to Figure 1.3. The cutting device is integrated in the applicator, that is to say the cutting device and applicator together form the shaving head 1. The main component of the applicator is an application roller 3 arranged parallel to the blades 2. The feeding device is accommodated in the handle 4 of the device and consists of a small pump 5 and a reservoir 6.

For shaving, the shaving head 1 is pulled over the skin with the aid of the handle 4 in such a way that the application roller 3 rolls over the skin immediately in front of the blades 2. The pump 5 is positioned in such a way that it lies between the thumb and forefinger and, depending on the embodiment, can be actuated by lightly alternating pressing and releasing. As a result, the preparation is pumped from the reservoir 6 into the applicator and distributed as a thin film on the application roller 3 and transferred from there to the skin. The dosage is easy. If the dosage is too short, the application roller will run dry, if the dosage is too strong, the drops will form.

Applicator part: (Figures 2a to 3b)

• Fig. 2 (a und b) zeigt eine Seitenansicht einer beispielhaften Ausführungsform eines Applikators gemäss Erfindung, bei dem ein separater Lagerteil besonders hervorgehoben ist;
• Fig. 3 (a und b) zeigt Schnitte durch dieselbe Ausführungsform und durch eine weitere, in einen Rasierkopf integrierte Ausführungsform.

The following figures serve to describe the applicator part.

• 2 (a and b) shows a side view of an exemplary embodiment of an applicator according to the invention, in which a separate bearing part is particularly highlighted;
• 3 (a and b) shows sections through the same embodiment and through a further embodiment integrated into a razor head.

The applicator consists of an application roll and a feed system. The application roll is rolled over the skin for the application, for example. For example, it is rotatably and pivotably mounted so that it is swung out in one direction (application direction R) when unrolling, while it remains in its rest position when unrolling in the other direction and, if it is not rolling. Swinging out makes it possible for a thin film of preparation to be carried outwards from the feed system on the roll surface. In the rest position, the application roller shields the feed system from the outside. In another embodiment, the application roll is fixed and the gap width remains constant. This embodiment is suitable for preparations that do not dry out too much and tend to form little film. In a further embodiment, the application roller can also only be pivoted but not rotatably mounted, so that it closes and opens the application opening, but acts for the application itself in approximately the same way as an application spatula, as will be described in the following.

2a shows an applicator from the side. It consists of the roller 3, a head piece 21 and two bearing parts 22 attached laterally from the head piece 21. The bearings 23 in the bearing parts 22 are either designed such that they not only rotate the roller 3 about its axis of rotation, but also pivot it out Allow axis of rotation or so that they only move about their axis of rotation. The first variant results in a variable application gap width and in the second variant a fixed application gap width. In FIG. 2b, which represents a separate bearing part 22, a bearing 23, which enables a variable application gap width, is also shown separately.

FIG. 3a shows a section through the head part 21 of the embodiment of the applicator shown in FIG. 2a. A bore 31, which serves to feed the preparation, connects the roller-bearing end of the head part 21 to its connection end. At the end of the reel, the bore opens into a channel 32, which runs parallel to reel 3 and is open toward reel 3. The head part is shaped into lips 33.1 and 33.2 on both sides of the channel 32.

In contrast to a fixed roller bearing, the bearings of the roller 3 in the bearing parts 22 (see FIG. 2) are designed in such a way that the roller can assume two extreme pivot positions: a "rest position" (shown in solid lines in the figure) and an "application position""(shown in dashed lines in the figure). When the roller 3 is in its rest position, both the column A between the lip 33.1 and the roller 3 and the column C between the lip 33.2 and the roller 3 are so narrow that no preparation can escape and the channel 32 and thus the feed system is shielded from the outside. When the roller 3 is moved from the rest position into the application position, the width of the column A does not change, while the column C widens until its width in the application position corresponds to the desired exit quantity for the preparation. The application position for a desired exit quantity can also remain fixed, so that the rest position corresponds to that of the application position. Depending on the film formation, the shielding is then good or better, and the drying is good or worse.

If, in the case of the embodiment with a variable application gap, the roller 3 is pulled over the skin in the application direction, it is rotated by the friction between the skin and the roller in the direction of the arrow R and is thereby pivoted into the application position and held in it. If the roller 3 is rotated in the direction opposite the arrows R, it is pivoted into the rest position and held in this position. If the roller 3 is in its application position, but is no longer rotated in the application direction, which is the case immediately after application, it is withdrawn against the rest position by the surface tension of the preparation surface in the gap C. The physical properties of the preparation are therefore used to close gap C after application. The surface is under tension that tries to reduce the surface to a minimum. If the bearings 23 are designed in such a way that the bearing forces which have to be overcome for the roller 3 to oscillate are smaller than the forces resulting from the surface tension, the roller is moved against the rest position as soon as it is not moved in the opposite direction by the application movement is pressed. If the applicator is left to itself after the gap C is closed by the surface tension, a skin forms in the gap C by drying the preparation surface, which shields the rest of the preparation from the outside in the delivery system. This shielding is sufficient to prevent further drying of the preparation and to protect the preparation against oxidants and bacteria, for example. When reapplied, the skin covering gap C is immediately torn and does not interfere with the application in any way.

Experiments have shown that the physical properties of a large number of commercially available skin preparations for shaving meet the requirements made by the shielding mechanism described, i.e. are suitable for use in the applicator according to the invention, whether with a variable or with a fixed application gap.

Because the gap A between the lip 33.1 and the roller 3 is very small in any pivoting position (open / closed or for, correspondingly open) of the roller 3, the channel 32 on the side of the lip 33.1 is always closed to the outside. In the rest position and in the application position of the roller 3, no preparation can get out in this direction, in the application position no contamination that carries the roller from the skin past the lip 33.1 can pass into the channel 32. In the embodiment with a fixed gap, this is only weakened.

For additional protection and termination of the applicator, it can also have a lid which is placed on the applicator after the application has ended and which is shaped such that it presses the roller 3 against the two lips 33.1 and 33.2 or simply covers the application gap. Likewise, instead of a protective cap, additional mechanical pressing means, for example springs, can be provided in order to press the application roller 3 against the sealing lip. This may be necessary if, for example, such a shaving device is exposed to strong pressure fluctuations in travel versions and an additional closing force is desired on the device.

3b shows a section through the embodiment of the applicator according to the invention with a variable gap. It shows the same parts as the applicator shown in FIG. 3a, but a blade carrier 34 with blades 2 is placed on its head part 21 by means of, for example, a sliding and snap fastening. The roller 3 is advantageously as long as the width of the blade or blades 2. The blade carrier 34 is placed on the head part 21 in such a way that the roller runs parallel to the blades and when the shaving head is guided over the skin in the shaving direction (same as the application direction) is rotated in the direction of arrow R and is thereby pivoted into the application position.

The application device with application roller 3, head part 21 and bearing parts 22 can also be integrated in an exchangeable blade carrier, which can be placed or exchanged as a whole on a shaving head. This solution has hygienic advantages because the application roller that comes into contact with the skin is periodically renewed with the blades. The supply part arranged on the blade carrier is connected to the supply part arranged on the razor by suitable measures.

Feeding device: (Figures 4a to 8)

• Fig. 4 (a bis d) zeigt einen schematischen Längsschnitt durch eine beispielhafte Ausführungsform der erfindungsgemässen Speisevorrichtung (4a) und Ausführungsformen der Membrane (4b/c/d) der für diese Ausführung verwendeten Membranventile.
• Fig. 5 (a bis c) zeigt die Kleinpumpe mit anderen Ausführungsformen von Ventilen,
• Fig. 6, 7a und b, 8 zeigen weitere beispielhafte Ausführungsformen der Kleinpumpe und ihrer Verbindungen zu Reservoir und Applikator.

The feed device according to the invention, with which the applicator is fed with preparation, is described with reference to the following figures.

• 4 (a to d) shows a schematic longitudinal section through an exemplary embodiment of the feed device (4a) according to the invention and embodiments of the membrane (4b / c / d) of the membrane valves used for this embodiment.
• 5 (a to c) shows the small pump with other embodiments of valves,
• 6, 7a and b, 8 show further exemplary embodiments of the small pump and its connections to the reservoir and applicator.

FIG. 4a shows a schematic longitudinal section through an exemplary embodiment of the feeding device according to the invention. In principle, this consists of a small pump 5 and a reservoir 6, both of which together, for example, simultaneously form the handle 4 of the application device, or are accommodated in a corresponding handle. The reservoir 6, as shown, is accommodated in the end 4.1 of the handle (reservoir part of the handle) facing away from the applicator, where a sufficient volume does not have a disruptive effect. The small pump 5 is advantageously arranged in such a way that it can be actuated during application, that is to say its actuating members are located in the region of the fingers holding the handle during application, that is to say at the end of the handle facing the applicator, and forms the pump part 4.2 of the handle . The handle 4 is connected to the connection part 4.3 with the supply system of the applicator. The main components of the small pump are an elastic bellows 41, the internal volume of which can be reduced, a one-way valve 42, which functions as an outlet valve for the reservoir 6, and a second one-way valve 43, which functions as an inlet valve in the applicator.

If the bellows 41 is compressed, an excess pressure is created in its interior, which opens the inlet valve 43. As a result, the preparation or air flows into the applicator until the pressure is equalized and the inlet valve 43 closes again. If the bellows is now released, causing it to return to its original shape, a negative pressure is created in its interior, as a result of which the outlet valve 42 opens and product is conveyed out of the reservoir until the pressure is balanced again and the outlet valve 42 closes. By alternately compressing and releasing the bellows 41, so much preparation can be pumped into the applicator that the feed bore 31 and the channel 32 (FIG. 3) are filled and the preparation carried out from the roller 3 is constantly replaced.

The reservoir is provided with an appropriate pressure equalization means so that pressure equalization is possible when the preparation is pressed out of the reservoir. This can be, for example, a piston 48 movable in the reservoir 6 or a pressure compensation valve.

Since the small pump also serves as a handle, but the bellows does not have enough stability for this function, an inner pump body 44 is mounted inside the bellows 41, which in this exemplary embodiment has the shape of a tube, fixed to the reservoir part 4.1 of the handle and is connected to the connecting part 4.3 and is provided with openings 45 for pressure equalization. Because the inner pump body is angled, it forms an ergonomic handle together with the other parts of the feed device. The bellows 41 is placed over the inner pump body 44 and clamped in place with elastically deformable means 46, for example clamping rings.

In the embodiment shown, the two one-way valves 42 and 43 are, for example, diaphragm valves. A resilient membrane 47.1 keeps the outlet of the reservoir closed in the force-free state and a corresponding membrane 47.2 keeps the entrance to the applicator closed. The two membranes are arranged in such a way that the membrane 47.2 is deformed in the event of overpressure within the bellows, but the membrane 47.1 in the case of underpressure. The membranes are designed in such a way that they allow the preparation to pass through when deformed. Figures 4b to d show examples of membranes suitable for use. 4b and c represent hollow spherical membranes which comprise openings D lying outside the area of the opening to be closed, FIG. 4d a rectangular membrane which, by not spanning the entire inner cross section of the handle, allows passage for the preparation.

Figure 5 shows a further embodiment of the small pump. The pump itself is designed in the same way as the pump in FIG. 4, but includes other one-way valves 42 and 43. As shown in FIG. 5a, these one-way valves can be ball or piston valves. A ball 51 or a piston 52 are pressed by a spring 53 in a direction opposite to the pressure force generated by the bellows 41 against the opening to be closed. The spring 53 is designed so that the pressure force that can be generated with the bellows 41 is greater than the spring force. The piston 52 must allow passage for the preparation. For this purpose it can be provided, for example, on its cylindrical surface with grooves 55, which can be seen in the detailed drawing 5b.

In contrast to the embodiment shown in FIG. 4, in the embodiment shown in FIG. 5, the inner pump body 44, which is advantageously made of metal, is a separate part, while the reservoir part 4.1 of the handle and the connection part 4.3 to the applicator with elastically deformable clamp connections on the K ends are provided. In order to produce the feed device, the bellows 41 is put over the pump body 44 and then the reservoir part 4.1 of the handle and the connecting part 4.3 are put on. The bellows 41 also performs its function as a pump part and also functions as a sealant between the different parts of the feed device.

The type of one-way valves used is not tied to a special version of the small pump. This is illustrated by FIG. 5c, which represents the same embodiment variant as FIG. 5a, but is provided with diaphragm valves. In the same way, design variants are like shown in Figure 4, but provided with ball or piston valves, conceivable.

FIGS. 6 to 8 show further embodiments for the small pump and its connections to the reservoir part 4.1 of the handle and the connection part 4.3 to the applicator.

The variant shown in FIG. 6 contains an inner pump body which has the shape of a block with corresponding bores which contain the one-way valves 42 and 43. The pump body 61 is provided with grooves 62.1 / 2 and with stops 63.1 / 2 such that the correspondingly shaped bellows 41 can be slipped over it during assembly and the thickened bellows ends 64.1 / 2 come to rest in the grooves 62.1 / 2 while the parts 4.1 and 4.3, which in turn are provided with elastically deformable connection points K, are pushed over the stops 63.1 / 2.

FIG. 7 shows a further embodiment variant of the small pump and its connections to reservoir part 4.1 and connection part 4.3. In this case too, reservoir part 4.1 and connecting part 4.3 have elastically deformable connection points K, in that, as shown in FIG. 7b, they are equipped with a longitudinal slot L. The pump body 44 is plug-shaped at its two ends in such a way that the reservoir part 4.1 and the connecting part 4.3 can be simply plugged on. The sealing function is also carried out here by the correspondingly shaped bellows ends of the bellows 41 placed over the pump body 44.

FIG. 8 shows an embodiment of the small pump which is advantageous due to its simplicity. Reservoir part 4. 1, pump body 44 and connecting part 4.3 of the Handle 4 are held together by the tubular bellows 41, for example glued or welded. The membranes 47.1 and 47.2 are between reservoir part 4.1 and pump body 44. mounted between connector 4.3 and pump body 44. The elastic, tubular bellows 41 connects the individual parts of the handle, seals all connection points and serves as a pump operating element.

Shaver: (Figures 9 to 19)

• Fig. 9 einen Schnitt durch ein Rasiergerät mit auslenkbarer Applikationsrolle,
• Fig. 10 ein Detail einer Ausführungsform mit starrer Applikationsrolle,
• Fig.11 ein Detail einer Ausführungsform mit auslenkbarer Schneidvorrichtung und starr damit verbundener Applikationsrolle,
• Fig. 12 (a und b) eine Ausführungsform mit elastischem Applikationsspachtel in Ruhe- und Applikationsstellung,
• Fig.13 (a und b) wie Fig. 12 mit scharnierendem Applikationsspachtel,
• Fig.14 (a und b) wie Fig. 13 mit zusätzlicher Applikationsrolle,
• Fig.15 (a und b) wie Fig. 12 mit starrer Applikationsrolle und elastischer äusserer Lippe,
• Fig.16 (a und b) wie Fig. 15 mit scharnierender äusserer Lippe,
• Fig.17 (a und b) wie Fig. 15 mit verschiebbarer äusserer Lippe,
• Fig.18 (a und b) Ausführungsformen mit Kamm an der äusseren Lippe.
• Fig.19 (a, b und c) Ausführungsformen mit zylindrischer, konvexer und konkaver Applikationsrolle und entsprechend gestalteten Klingen.

The following figures represent exemplary embodiments of shaving devices according to the invention.

• 9 shows a section through a shaving device with a deflectable application roller,
• 10 shows a detail of an embodiment with a rigid application roller,
• 11 shows a detail of an embodiment with a deflectable cutting device and an application roller rigidly connected thereto,
• 12 (a and b) an embodiment with an elastic application spatula in the rest and application position,
• Fig. 13 (a and b) like Fig. 12 with a hinged application spatula ,
• 14 (a and b) like FIG. 13 with an additional application roller ,
• Fig. 15 (a and b) as in Fig. 12 with rigid application roller and elastic outer lip,
• Fig. 16 (a and b) like Fig. 15 with a hinged outer lip,
• Fig. 17 (a and b) as in Fig. 15 with displaceable outer lip,
• Fig. 18 (a and b) embodiments with a comb on the outer lip.
• Fig. 19 (a, b and c) embodiments with cylindrical, convex and concave application roller and correspondingly designed blades.

9 shows, as an exemplary embodiment, a complete shaving device consisting of a feeding device, applicator and cutting device, which is placed on the applicator in the form of a blade holder with blades.

A small pump 5 and reservoir 6 form the handle. The headpiece 21 of the applicator is connected directly to the small pump 5, and is designed in such a way that a blade carrier 34 can be attached to it. The applicator corresponds to the embodiment described in connection with FIG. 3b. The small pump 5 consists of a cylindrical pump body 44, the diameter of which is larger at both ends than in its central part, and a tubular bellows 41 which is placed over the central part of the pump body 44. The reservoir 6 is firmly connected to the pump body 44. The applicator comprises a connection part which overlaps the pump body and is fastened to the pump body, for example, with the aid of fastening screws 92. The two one-way valves 42 and 43 are integrated in the pump body 44. The outlet valve 42 from the reservoir consists of an axial bore 93 which extends from the end face of the reservoir to the part with a reduced diameter and opens into at least one radial opening 94 there. The exit of the opening 94 is closed by an O-ring 95. The inlet valve 43 to the applicator consists of a radial opening 96 in the part with a reduced diameter of the pump body, which opens into an axial bore 97. The axial bore 97 is closed on the applicator-side end by the head part 21 of the applicator and by the O-ring 100. At least one radial opening 98 opens into the axial bore 97 against the end face of the pump body, the outlet of which is closed off with an O-ring 99 at the slightly reduced outer diameter of the pump body 44 at this point. The feed channel 31 of the applicator opens directly into the annular channel 101 resulting from the reduction in diameter. Vacuum in the space between bellows 41 and pump body 44 presses the O-ring 95 away from the opening 94, overpressure the O-ring 99 from the opening 98.

The reservoir 6 of this embodiment of the feed device forms the reservoir part 4.1 of the handle. It carries an axially movable piston 48 in its interior and on its end facing away from the small pump an end piece 104 with a ventilation opening 105. When the small pump is used to pump product out of the reservoir, the piston 48 moves against the small pump until the pressure is equalized .

The embodiment of the feed device according to FIG. 9 typically allows half a drop of preparation (approx. 25 microliters) to be dosed per pump movement. If, for example, 4 drops of preparation are required for a shave, this means that the pump must be operated every 15 to 20 seconds. In this case, a reservoir volume of 10 cm³ that can be easily integrated in one hand is sufficient for approx. 50 shaves.

In connection with the other figures, further exemplary embodiments of the applicator are now shown, always with the embodiment of the shaving apparatus as shown in FIG. 9, that is to say with a cutting device plugged onto the applicator. Corresponding embodiments are of course also conceivable for cutting devices integrated in the applicator, for example, and also in combination with any other feeding devices.

The application roller can be structured on the surface (not a figure), which provides some advantages, such as better traction on the skin and better fluid transport, but also has disadvantages, such as drying of the fluid in the recesses of the structure and also a " Return transport "of used fluid in the area of the fluid supply channel.

For a simpler embodiment, the application roller can also not be pivoted, that is to say it can only be rotatably or rigidly connected to the lips 33.1 and 33.2, as shown in FIG . As a result, it functions in the manner according to the invention as a means for distributing the fluid on the skin, for pushing the skin back locally immediately before the cutting edges pass over it, and for partially but not changeably covering the feed channel 31.

Instead of a pivotable application roller, a displaceably or resiliently mounted blade carrier 34 with an integrated, rotatably mounted or rigid application roller 3 can also be used, as shown in FIG . Here the advantage can be seen in the constant distance between the application roller 3 and the blade or blades 2. If the blades are spring-loaded, you also have the advantage of constant pressure on the skin, which reduces the risk of cuts. In the unloaded state the feed channel 31 is closed by the spring force, which would correspond to the embodiment with the variable feed gap.

Instead of the application roller, an application spatula can also be used. Corresponding embodiments are shown in FIGS. 12, 13 and 14, with FIG. A representing the rest position and FIG. B the application position. The inner lip 33.1 (or manipulation part of the applicator 30.2, FIG. 1) is designed as a deflectable spatula 35, and the outer lip 33.2 is rigid, as in the previously described embodiments with an application roller. An embodiment with a spatula has the advantage that the outlet gap is well sealed in the idle state. The cutting process (ie in the application position) opens the application gap by pivoting the spatula out of its rest position, and the fluid can be released onto the skin surface. In this way, a regulated fluid leakage onto the skin surface is guaranteed. In all embodiments with a spatula, the cutting angle is defined via the fixed outer lip 33.2 and the blade contact surface. The fixed outer lip 33.2 can be part of the blade body, for example.

The spatula (35.1, Fig. 12) can be designed to be elastic in such a way that it closes the feed channel in the rest position (Fig. 12a), but is deflected in the application position and exposes the opening of the feed channel (Fig. 12b) and due to the elastic properties the material is moved back to the rest position. The spatula (35.2, Fig. 13) can also be hinged to the applicator (FIG. 13), again closing the feed channel in the rest position (FIG. 13a), deflected into the application position (Fig. 13b) and For example, is brought back to the rest position by spring force. The embodiment shown in Figure 14 has on a hinged spatula 35.3 a rotatably mounted or rigid application roller 3 ', which takes over the function of distributing the preparation on the skin.

Instead of a rigid outer lip as a counter lip to an application roller, a movable application lip can also be used in connection with the action of the feed device (pump). Corresponding embodiments are shown in FIGS. 15, 16 and 17 , again in the rest position (FIG. A) and in the application position (FIG. B). All variants with movable application lips have at least the same advantages as the variants with rigid outer lips and application rollers, and further advantages can also be achieved with variants of the lip design.

The outer lip 36.1 of the variant shown in FIG. 15 is elastic. It is swung out of its rest position on the application roller 3 by the pump pressure and moved back into the rest position due to the elastic properties of its material. The same applies to the variant shown in FIG. 16 with a hinged outer lip 36.2, which is moved into the rest position, for example, by spring force. With pivotable outer lips of this type, it is possible to regulate the amount of fluid exiting greatly via the pressure of the application pump, the fluid exiting regulating the outlet gap outside the rest position. With deflectable lips, the discharge quantity can be controlled over a wide range by the pump pressure. The pump pressure must first overcome the spring pressure of the lip in its basic position before the fluid can escape to the outside. Only the contact pressure on the skin has to be taken into account, which counteracts the pump pressure.

The variant shown in FIG. 17 has a manually displaceable outer lip 36.3, with the aid of which the fluid supply can be opened, closed and regulated manually. Although the outlet opening is not self-regulating, the opening torque can be determined independently of the pump pressure.

In all embodiments, the lower part of the application head can be designed as a comb, so that the hair is offered to the blade in a nicely aligned manner due to a combing effect. Two corresponding exemplary embodiments with a comb 35 which is attached to the outer lip 33.2 are shown in FIGS . 18a and 18b .

Depending on the use, the shaving head can be designed for shaving more or less flat or more rounded surfaces by using appropriately shaped application rollers or application spatulas and application openings and blades designed according to the function of the roller shape. FIGS. 19a to c show examples in which the course of the cutting blades essentially follows the course of the application roller (whereby such shapes can also be transferred to the application spatula). Deviations from this shape can also be useful, but the shape of the application roller should be functionally related to the blade shape. The possibilities outlined here only represent suggestions for further development and therefore only one application roller 3 and blades 2 are shown here in their relative arrangement. FIG. 19a shows a typical arrangement with a cylindrical application roller 3a for shaving skin surfaces that can be deformed from the application roller into a flat surface, FIG. 19b shows an arrangement with a convex application roller 3b for shaving concave surfaces such as depressions, for example in the armpits, which are no longer accessible with the linear blade, FIG. 19c shows an arrangement with a concave application roller 3c for shaving convex surfaces such as elevations, for example on the larynx, in which the linear blade would entail an increased risk of injury. According to the embodiments already shown (and According to the principle representation in FIGS. 1 to 1.4), the application gap is also formally assigned to the application roll, the functional connection between the supply of the fluid and its distribution also remaining the same here. Embodiments designed in this way can work on more rounded shaving surfaces.

Claims (25)

Device for surface or contour shaving with simultaneous application of a thin film of a shaving-specific preparation, characterized in that it comprises a cutting or blade part, an applicator part and a feeding part, which are functionally matched to one another, means being present which can be used to bring out a pressure from the feeding part Guide the fluid into a fluid channel (10) in the applicator part, and the applicator part has a slit-shaped application opening with limiting means (30.1 and 30.2), by means of which the fluid is distributed on the skin when the device is moved in the cutting direction. A device for surface or contour shaving according to claim 1, characterized in that the applicator part for applying and distributing a fluid and the cutting part with the blades form a razor head, which razor head can be placed on the feed part and connects the fluid channel from the feed part to the application opening in the applicator part . Device for surface or contour shaving according to one of claims 1 or 2, characterized in that the limiting means (30.1 and 30.2) consist on the one hand of an application roller (3) arranged against the cutting edges (2) and parallel to them on a rigid inner lip (33.1) ) and, on the other hand, there is a rigid outer lip (33.2) which is removed from the cutting edges and also arranged parallel to these. Device for surface or contour shaving according to claim 3, characterized in that the application roller (3) is rotatably or pivotably mounted. Device for surface or contour shaving according to claim 3, characterized in that the application roller (3) is arranged rotatably and pivotably on the inner lip (33.1). Device for surface or contour shaving according to claim 5, characterized in that the pivot axis of the application roller (3) is parallel to the column (A) between the roller (3) and the lip (33.1) such that the column (A) in each Swivel position of the roller (3) has a minimum width. Applicator according to one of claims 5 or 6, characterized in that the gap (C) resulting from the swelling of the roller (3) from the rest position into the application position between the lip (33.2) and the roller (3) in its width the application corresponds to the desired exit quantity of the preparation. Device for surface or contour shaving according to claim 3, characterized in that the application roller (3) is rotatably or non-rotatably arranged on the blade holder 34 and that the blade holder 34 is attached to the shaving head with the aid of resilient means. Device for surface or contour shaving according to one of claims 1 or 2, characterized in that the limiting means (30.1 and 30.2) on the one hand consist of an application spatula (35) arranged against the cutting edges (2) and parallel to them on a rigid inner lip (33.1) and, on the other hand, there is a rigid outer lip (33.2) which is removed from the cutting edges and also arranged parallel to these. Device for surface or contour shaving according to claim 9, characterized in that the application spatula (35) is attached to the inner lip (33.1) as a hinge or consists of an elastic material and is bendable. Device for surface or contour shaving according to one of claims 9 or 10, characterized in that an application roller (3 ′) is attached to the edge of the application spatula (35) facing the skin. Device for surface or contour shaving according to one of claims 3 to 8 or 11, characterized in that the application roller (3 or 3 ′) has a cylindrical, convex or concave application surface. Device for surface or contour shaving according to one of claims 1 or 2, characterized in that the limiting means (30.1 and 30.2) on the one hand from one against the cutting edges (2) and parallel to these, rigid inner lip (33.1) and on the other hand one from the cutting edges, also parallel to these on a rigid outer lip (33.2) arranged spatula (36). A device for surface or contour shaving according to claim 13, characterized in that the spatula (36) is attached to the outer lip (33.2) with a hinge or consists of an elastic material and is bendable or that it can be displaced with respect to the lip (33.2). Device for surface or contour shaving according to one of claims 1 to 14, characterized in that a combing means (37) is attached to the outer limiting means (30.1) parallel to the blades (2). Device for surface or contour shaving according to one of claims 1 to 15, characterized in that the feed part consists of a preparation reservoir (6) and a small pump (5) and that the preparation reservoir (6) and small pump (5) together the handle (4) form the device. Device for surface or contour shaving according to claim 16, characterized in that the small pump (5) comprises an elastic bellows (41) and two one-way valves (42 and 43). Device for surface or contour shaving according to claim 17, characterized in that diaphragm, ball or piston valves are used as one-way valves in the feed part. Device for surface or contour shaving according to claim 17, characterized in that the one-way valves of the feed part are formed by opening systems (93/94 or 96/97/98) in the cylindrical pump body (44), the outputs of which are preferably on the cylinder surface by O- Rings (95 or 99) are completed. Device for surface or contour shaving according to one of claims 17 to 19, characterized in that the reservoir part (4.1), pump body (44) and connection part (4.3) form a firmly joined part and that the bellows (41) around the pump body (44 ) is arranged and fastened with elastic fastening means (46). Device for surface or contour shaving according to claim 20, characterized in that the elastic fastening means (46) are clamping rings. Device for surface or contour shaving according to one of claims 17 to 19, characterized in that the reservoir part (4.1), pump body (44) and connecting part (4.3) comprise elastically deformable connection points (K), with the aid of which they are joined to one another, and in that the bellows (41) is designed such that it seals these connection points. Device for surface or contour shaving according to one of claims 17 to 19, characterized in that the reservoir part (4.1), pump body (44) and connecting part (4.3) are held together by the bellows (41) and sealed against one another and that the diaphragm valves (42 rsp . 43) from between the reservoir part (4.1) and the pump body (44). there are resilient membranes between the pump body (44) and the connecting part (4.3). Device for surface or contour shaving according to one of claims 1 to 23, characterized in that the preparation reservoir (6) in the feed part consists of a hollow cylinder and a piston (48) movable in this hollow cylinder. Device for surface or contour shaving according to one of claims 1 to 23, characterized in that the preparation reservoir (6) in the feed part consists of a deformable hollow body.

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