Razor head, particularly a blade unit

The invention relates to a arranged at the front end of a handle A razor head, especially a razor blade unit of a wet razor, in which in a, a front guide strip and a rear cover cap having plastic housing a single or double is attached and in which the razor head a supply means for Containing a liquid shaving preparation, skin care agent or the like. In having the form of a storage chamber, said supply means a dispenser is assigned to the delivery of the agent during shaving.

In Einwegnaßrasierapparaten a single or double is inextricably embedded in the razor head in a plastic housing. Is the A razor head formed separately and may be attached to a handle are, for which purpose the handle and the razor head each have corresponding locking means, speaks one of a so-called razor blade unit.

It is known, such razor blade units with an additional glide equip, so shaving more comfortable by reducing friction to design. This glide is a shaving provided that is discharged during shaving. A distinction essentially two systems.

The first system is based on a mixture of water-soluble plastic type Polyox (PEO) and the water-insoluble polystyrene (PS). These PEO / PS glide in different forms. They are also to various manufacturing processes manufactured. DC is in all these Lubricating strip that during shaving a certain amount, usually between 1 and 5 milligrams of water-soluble plastic is applied.

A disadvantage of this first system, that the order of Polyox during shaving is very inaccurate and heavily on the individual shaving habits depends. It also shows that even with the second and third shaving the leached amount of Polyox subsides, thus very quickly a noticeable easing of shaving comfort leads. Another disadvantage This first system lies in the fact that after only a few applications a very unclean appearance of the glide adjusts. Furthermore is the glide sensitive to moisture, particularly in the bathroom is available. Moreover, in Polyox solutions depends viewed resulting during shaving viscosity strongly the individual shaving the user from, ie how much of the lubricating strip is wetted with water. For non-uniform treatment of the razor cartridge, the effects are negative and the user writes the "stickiness" of the white glide. Finally, when the first system is the water-soluble lubricating produced by a plastic which, although as dermatologically safe is classified, but the desired effect can not with natural products to accomplish. This is due to the fact that the manufacturing process temperatures requires that natural products would decompose. Due to the manufacturing process is not a drug addition possible. In the production of Glide necessary temperatures are above 200 ° C.

The second system is based on a Ultra Glide-capable film during the Shaving also reduces the frictional force and thus a more comfortable shave guaranteed. While clear in the first system described above ascertainable and measurable Polyoxmengen be applied to the shaving surface, this is not at the second system to achieve the same effect necessary.

The ultraslide polyester film of the second system thus achieves a more comfortable Shave without the previously described drawbacks of the first system, so that there is no appreciable application of lubricants to the skin, so further that the performance over a prolonged period and over several Shaves preserved so that in another point no unclean Appearance during use and results so that finally most extensive Insensitivity to humidity and heat is given. though due to the mechanism of action no natural liquid Shaving are applied and no skin care products, perfumed Shaving.

In the US-A-4850107, a razor is disclosed, the front on End of a handle is disposed, and thereby is in a, a front guide bar and a rear cover having plastic housing a double razor blade arranged. For ease of shaving, the razor a storage device for receiving a liquid shaving preparation in which a dispensing device for dispensing this liquid Shaving shaving are assigned is. For this purpose, in the upper region of the shaver a with the liquid shaving Soaked sponge placed. During shaving, the user must topside press the sponge, so that the liquid shaving pressed out through openings in the cutting edge region of the razor blade becomes.

This previously known device has the disadvantage that on the one hand with the fingers by the user, the shaving aid to be pushed out, secondly, the storage device for receiving the liquid shaving aid a volatilization thereof can not prevent. Furthermore, it is impossible, highly liquid with the known device shaving etc. controlled dispense.

Proceeding from this, the invention, <b>task</b> based on the razor head, particular razor cartridge of the above-stated Type such that even liquid shaving, skin care products . Will be issued, or the like, that this in itself is not in use can not evaporate and remains a passive, automatic dispensing the liquid shaving preparation is achieved.

As technical <b>solution</b> it is stated that one in the pantry in this adjustable tubular cartridge for receiving the liquid agent is arranged, said cartridge having at least one bore which in the one adjustment position behind a corresponding opening of the plastic housing lies and by the other adjustment position of the cartridge the inner wall of the storage chamber is closed.

A trained according to this technical teaching razor, in particular A razor blade assembly has the advantage that an application of liquid, natural and optionally perfumed shaving preparations and skin care products during shaving is possible, or the like.. This is achieved according to achieved by the razor a stocker having for these liquid agents, which then, if necessary during shaving be issued. The reservoir device was through the development of narrow razor possible without at the same adverse magnification the razor cartridge for storing the liquid agent to create. This makes it possible, shaving products or generally care agent apply with always constant viscosity. This does not depend the individual shaving off, as for example in the known Polyox solutions is the case. Particular importance is thus given an inventive Razor cartridge characterized in that it is particularly suitable to to apply natural substances. Natural products can skin than the Plastics used to be, but are temperature- and light-sensitive. Temperature and light usually deplete the natural Molecules and the access of air, by a decomposition Oxygen uptake lead. All these potential drawbacks of natural products excluded in the razor head through the feeding device according to the invention. While in the above-described first system of the prior Technology 2-5 milligrams Polyox be applied per shave , in order to reach an improvement of the shaving comfort, allows the invention A razor the job of shaving aids or like. to about 20 milligrams to about 700 milligrams, wherein the means of Available volume for the liquid means a sufficient supply can be guaranteed through the shaving time.

The fact that in the pantry a variable in this, tubular Cartridge is arranged for receiving the liquid agent, said cartridge having at least one bore in the one adjustment position behind the corresponding opening of the plastic housing and is located in the other adjustment position of the cartridge by the inner wall of the storage chamber is closed, the storage chamber can be represented by a corresponding open position of the cartridge for shaving, while for the non-use the razor cartridge is adjusted such that the bores are closed and therefore a leakage of the contained in the cartridge Shaving is prevented. This principle is particularly suitable cartridges for liquid and quickly volatiles. Preferably, there is the cartridge also of a transparent material, thereby forming in the back Region of the shaver the outer surface, so that the user can control from outside the level within the cartridge.

Preferably, the cartridge in the manner of a hollow cylinder is formed. This has the advantage of being rotatably disposed within the storage chamber can be such that for opening and closing the two different openings Rotational positions are provided.

Alternatively, for the rotatable cartridge, this side also in the direction of the axis be slidably disposed within the storage chamber. Preferably are laterally mounted pressure pieces are provided with which the Moving the cartridge is made possible.

In a similar training as in the application roll previously described also the cartridge can preferably replaceable in the pantry be arranged so that an empty cartridge replaced by a full can be and thus over the entire life of the razor blade Supply is ensured with the shaving.

It is proposed in a further development of the razor that preventing this when not in use with the evaporation of the liquid agent Cover is provided. As a result, after prolonged storage of the Shaving apparatus can be prevented that the shaving aid gradually evaporates.

Preferably, the storage means in the rear region of the shaver head arranged, ie in the area of ​​the rear cover of the shaver. Use is made of the narrow construction of the razor advantage of the blank in the rear region of the shaver head sufficient space, to provide there the stocker.

Furthermore, the storage device preferably extends substantially over the entire width of the shaver head, so that the entire shaving width is provided with the shaving. Under the "width" of the shaver is the transverse extent in the shaving the shaver head to understand.

In an advantageous development of the storage chamber it is at least partially formed by a transparent material, which at least partially the outer surface of the shaver head forms. This provides the advantage with him, that the level of the liquid shaving preparation within the Pantry is visible from the outside and so easily by the User can be controlled.

When dispensing device is preferably at least one in a plastic housing opening formed provided from which the liquid agent from the Pantry while shaving emerges. Preferably opens (Open) the opening (s) in the region of the shield. Alternatively or additionally also opens (open) in the double razor the opening (s) in the region between the razor blades. In the latter case, the apertures originate preferably a common feed of the larder out. The openings are, however, not limited to the points, they can open at any other desired location, for example, even before the razor blades.

The ports can be configured in a wide variety of ways.

For example, a plurality of mutually separate openings in the form provided distributed holes across the width of the shaver head be. The holes have preferably a circular cross section. Thereby is provided with the shaving the entire shaving width. Also the opening may be as parallel to the (s) the cutting edge (s) of the razor blade (s) extending slot may be formed. Again, it is possible to provide several distribute slots across the width of the shaver head evenly. It is also conceivable to arrange a plurality of slots over each other.

In a refinement of the opening or openings this spring at an attitude of the razor with vertically downward Razor blade from the bottom portion of the storage chamber made. This entails making use of the fact that directed normally shave with downward Shaving movements is started. Thus, by the thus formed openings Then, the liquid shaving aid with active agent and / or perfume down emerge. Thus, in the shaving movements downward at any time a supply of shaving guaranteed.

In a specific structural design of this concept are the openings preferably formed by a slot-like channel, which in itself substantially parallel to the (s) level (s) of the razor blade (s) towards the front extends. Preferably, the slot-like channel (where one or more distributed such slit-like channels across the width of the shaver head may be provided) formed in the cover of the plastic housing.

In a further constructive training can on top of the shaver an over the width extending, against a spring force be arranged pivotable flap which in its basic position Opening due to the spring force automatically closes and during the frees shaving due to the exertion of pressure by pivoting the opening and then back automatically into the locking position during the Nonuse back. Thus, the flap is actuated during shaving and the application ports are opened. Thus, in this embodiment an independent exit of the shaving preparation during the non-use period locked out.

Preferably, the flap consists of an elastic material and is the Defining pivot on the upper side of the shaver attached. the spring force is thus generated by the internal stress of the flap, with which the flap is automatically pivoted in the closed position.

In a development of this flap principle the back of the cap define and the front of the pivotable in this area Flap mutually corresponding contact surfaces, with the top of the Flap in the pivoted open position, the rear continuation of Cap forms. In this way, a secure closing of the openings ensured in the non-use state of the shaver.

Embodiments of the invention in the form of razor a razor blade unit are below with reference to the schematic Drawings. In these shows:<dl tsize="7"><dt>Fig. 1</dt><dd>a perspective view of a first embodiment;</dd><dt>FIG. 2</dt><dd>a section through the shaver head of FIG. 1 on an enlarged Scale;</dd><dt>Fig. 3</dt><dd>a hälftige top view of a further embodiment;</dd><dt>Fig. 4</dt><dd>a corresponding front view of the razor cartridge in Fig. 3;</dd><dt>Fig. 5</dt><dd>a side view of the razor cartridge of Figure 3 from the right.</dd><dt>Fig. 6</dt><dd>a section along the line XVIII-XVIII in Fig. 4;</dd><dt>Fig. 7</dt><dd>a section along the line XIX-XIX in Fig. 4.</dd></dl>

In the drawings, embodiments of a shaver according to the invention presented in the form of a so-called razor blade unit. 1 In these razor blade units 1, the front end of a (not shown) handle by means of a special locking mechanism be fixed, in each case is in a plastic housing 2 a razor blade 3 inextricably embedded in the form of a double razor blade. As in the Is sectional views each seen this is in each case an L-shaped Spacer 4 provided at one limb of which the two razor blades 3 are fastened on both sides, while the other leg of the spacer 4 is set in the plastic housing. 2 The razor blade 3 lie each on a blade platform 5 of the plastic housing 2.

Furthermore, have all embodiments of the razor blade unit 1 a parallel to the cutting edges of the razor blades 3 extending, front Guide rail 6 and a rear cover cap 7 which essentially rests on the upper razor blade 3 and together with the front Guide strip 6 and the razor blade 3, the cutting geometry defined.

In another common phrase, the razor blade units 1 respectively at the rear of a storage element for a liquid shaving (Which can optionally also be perfumed), skin care products or like. to. Since the razor blades 3 is narrow, is behind them in the Razor blade unit 1. enough space for arranging this supply element, without the razor blade unit 1 are disadvantageously increased have to be.

The first embodiment (Fig. 1 and 2) provides for the use of a storage chamber 8 in the rear area of ​​the plastic housing 2 of the razor cartridge 1 before. The upper side of the plastic housing 2 has a series of Openings 9 in the form of bores parallel to the cutting edges of the razor blades 3, as can be seen in the perspective view of FIG. 9 is. The essential feature of this embodiment is that inside the storage chamber 8 is a tubular cartridge 22 for receiving the liquid shaving aid is arranged, which is closed at each end and thus forms a self-contained container. The cartridge case has over the length of the lateral surface distributed bores 23, which, in particular with respect to the intermediate distances with the openings 9 of the reservoir chamber 8 correspond. Inside, the cartridge 22 by projections 24 Channels 25 formed on which in the bores 23 on the outer surface the cartridge 22 open. Essential in this embodiment is that the Cartridge 22 is arranged laterally displaceable within the plastic housing 2 is. Moving the cartridge 22 can be effected by lateral control knobs 26 can be achieved, wherein the operating direction by the Arrows P '' is indicated. blank by the lateral displacement of the cartridge 22 the hole-like openings 9 Open the plastic housing 2 and close by in the open position the holes 23 of the cartridge 22 lie exactly behind the openings 9 of the plastic housing 2, while in the closed position by moving the cartridge 22 whose bores 23 behind the intermediate walls between the openings 9 of the plastic housing 2 are, so that they close the holes 23 of the cartridge 22nd

This principle is particularly suitable for low-viscosity and fast evaporating Substances. The distance and the size of the openings 9 and the bores 23 determine the applied amount during shaving. Here, the be harmonized application amount to the load profile, which is results from the different stress zones of the razor cartridge. 1 Here, the load and thus also the need for shaving aids in Central region of the razor blade 3 is greatest, while a decrease towards the edge is recorded.

The further embodiment (Fig. 3 to 7) finally also provides as the first embodiment of the use of a storage chamber 8 in the rear Area in front of the plastic housing 2 of the shaving cartridge. 1 The Top of the plastic housing 2 has in the cap 7 a number of openings 9 in the form of in each case a circular cross section having holes parallel to the cutting edges of the razor blades 3 on. It can be seen that in the central area of ​​the razor cartridge 1 the openings 9 follow closer to each other than further out. Besides these 9 holes in the cap 7, this embodiment has additional Openings 9, which in the rear region between the two Razor 3 open, as shown particularly in the sectional representation according . 7 can be seen FIG. The openings 9 go in each case by a common Feeding from out of the pantry. 8 But this is not any Associated opening 9 which opens in the area of ​​the cap 7 has an opening 9, which opens between the two razor blades. 3 As especially in Fig. 4 is seen, is always an opening into the cap 7 Opening 9 skipped.

Accordingly, as in the first embodiment (Fig.1 and 2) even when the this embodiment inside the storage chamber 8, a tubular cartridge 22 of transparent material to contain the liquid shaving aid arranged. This cartridge 22 is finished at each end and thus forms a self-contained container. As seen from the sectional views FIG. 6 and 7 can be seen, the cartridge 22 is back inserted into the plastic housing 2 of the razor blade unit 1 and by Barbs 31 held therein. The cartridge 22 is thus visible from outside, so that due to the transparency of the material of the filling inside the Cartridge 22 can be controlled.

Furthermore, the cartridge 22 over the length of the circumferential surface bores distributed 23 which with particular with regard to the intermediate distances allocations to the openings 9 of the storage chamber 8 correspond. Essential in this embodiment is also that the cartridge 22 laterally is slidably disposed within the plastic housing second moving the cartridge 22 can achieved by lateral control knobs 26 , whereby the operation direction indicated by the arrows P '' is. Due to the lateral displacement of the cartridge 22 can be the hole-like Additions to the openings 9 of the plastic housing 2 open and close by in the open position the holes 23 of the Cartridge 22 exactly behind the feeders with the openings 9 of the plastic housing 2 are, while in the closed position by moving the cartridge 22 whose holes 23 behind the partition walls between the Additions to the openings 9 of the plastic housing 2 are such that these bores 23 of the cartridge 22 closed.

This principle is just like the first embodiment (Fig. 1 and 2) especially for low viscosity and fast volatiles. The distance and the size of the openings 9 and the holes 23 thereby determine the while shaving amount applied. Here, the application rate be adjusted to the load profile, which is different from the Stress zones of the razor blade unit 1 results. Here, the load and thus also the need for shaving aids in the central region of the Razor 3 is greatest, while towards the edge to notice a drop is. For this reason, in this embodiment of the razor cartridge 1 in the central region, the openings 9 denser than the edges.

<b>LIST OF REFERENCE NUMBERS</b>

<dl tsize="4" compact="compact"><dt>1</dt><dd>razor cartridge</dd><dt>2</dt><dd>Plastic housing</dd><dt>3</dt><dd>razor blade</dd><dt>4</dt><dd>spacer</dd><dt>5</dt><dd>blade platform</dd><dt>6</dt><dd>guide rail</dd><dt>7</dt><dd>cap</dd><dt>8th</dt><dd>storeroom</dd><dt>9</dt><dd>opening</dd><dt>22</dt><dd>cartridge</dd><dt>23</dt><dd>drilling</dd><dt>24</dt><dd>extension</dd><dt>25</dt><dd>channel</dd><dt>26</dt><dd>operating button</dd><dt>31</dt><dd>barb</dd><dt>P ''</dt><dd>arrow</dd></dl>